Home / 398,714,353,879.56-550,225,835,248.18-218,273,261,127.79

Finding the Fourth Proportional to 398,714,353,879.56, 550,225,835,248.18 and 218,273,261,127.79

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Solution

The fourth proportional to 398,714,353,879.56, 550,225,835,248.18 and 218,273,261,127.79 is: 301,217,115,079.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,714,353,879.56 : 550,225,835,248.18 = 218,273,261,127.79 : x
  2. Step 2: Convert to fraction form
    398,714,353,879.56/550,225,835,248.18 = 218,273,261,127.79/x
  3. Step 3: Cross multiply
    398,714,353,879.56x = 550,225,835,248.18 × 218,273,261,127.79
  4. Step 4: Simplify right side
    398,714,353,879.56x = 120,099,587,416,382,368,645,120
  5. Step 5: Solve for x
    x = 120,099,587,416,382,368,645,120/398,714,353,879.56
  6. Step 6: Final answer
    x = 301,217,115,079.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.