Home / 398,540,495.90-550,095,275.79-231,330,626.88

Finding the Fourth Proportional to 398,540,495.90, 550,095,275.79 and 231,330,626.88

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Solution

The fourth proportional to 398,540,495.90, 550,095,275.79 and 231,330,626.88 is: 319,299,760.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,540,495.90 : 550,095,275.79 = 231,330,626.88 : x
  2. Step 2: Convert to fraction form
    398,540,495.90/550,095,275.79 = 231,330,626.88/x
  3. Step 3: Cross multiply
    398,540,495.90x = 550,095,275.79 × 231,330,626.88
  4. Step 4: Simplify right side
    398,540,495.90x = 127,253,884,992,227,168
  5. Step 5: Solve for x
    x = 127,253,884,992,227,168/398,540,495.90
  6. Step 6: Final answer
    x = 319,299,760.76

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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.