Home / 280,546,980.35-387,166,789.47-156,787,653.83

Finding the Fourth Proportional to 280,546,980.35, 387,166,789.47 and 156,787,653.83

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Solution

The fourth proportional to 280,546,980.35, 387,166,789.47 and 156,787,653.83 is: 216,373,644.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,546,980.35 : 387,166,789.47 = 156,787,653.83 : x
  2. Step 2: Convert to fraction form
    280,546,980.35/387,166,789.47 = 156,787,653.83/x
  3. Step 3: Cross multiply
    280,546,980.35x = 387,166,789.47 × 156,787,653.83
  4. Step 4: Simplify right side
    280,546,980.35x = 60,702,972,561,894,856
  5. Step 5: Solve for x
    x = 60,702,972,561,894,856/280,546,980.35
  6. Step 6: Final answer
    x = 216,373,644.39

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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.