Home / 487,729.60-731,580.65-132,746.70

Finding the Fourth Proportional to 487,729.60, 731,580.65 and 132,746.70

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Solution

The fourth proportional to 487,729.60, 731,580.65 and 132,746.70 is: 199,116.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,729.60 : 731,580.65 = 132,746.70 : x
  2. Step 2: Convert to fraction form
    487,729.60/731,580.65 = 132,746.70/x
  3. Step 3: Cross multiply
    487,729.60x = 731,580.65 × 132,746.70
  4. Step 4: Simplify right side
    487,729.60x = 97,114,917,071.36
  5. Step 5: Solve for x
    x = 97,114,917,071.36/487,729.60
  6. Step 6: Final answer
    x = 199,116.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.