Home / 487,689.23-731,459.93-132,730.91

Finding the Fourth Proportional to 487,689.23, 731,459.93 and 132,730.91

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Solution

The fourth proportional to 487,689.23, 731,459.93 and 132,730.91 is: 199,076.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,689.23 : 731,459.93 = 132,730.91 : x
  2. Step 2: Convert to fraction form
    487,689.23/731,459.93 = 132,730.91/x
  3. Step 3: Cross multiply
    487,689.23x = 731,459.93 × 132,730.91
  4. Step 4: Simplify right side
    487,689.23x = 97,087,344,297.91
  5. Step 5: Solve for x
    x = 97,087,344,297.91/487,689.23
  6. Step 6: Final answer
    x = 199,076.25

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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.