Home / 487,736.91-731,838.65-172,342.35

Finding the Fourth Proportional to 487,736.91, 731,838.65 and 172,342.35

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Solution

The fourth proportional to 487,736.91, 731,838.65 and 172,342.35 is: 258,595.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,736.91 : 731,838.65 = 172,342.35 : x
  2. Step 2: Convert to fraction form
    487,736.91/731,838.65 = 172,342.35/x
  3. Step 3: Cross multiply
    487,736.91x = 731,838.65 × 172,342.35
  4. Step 4: Simplify right side
    487,736.91x = 126,126,791,900.12
  5. Step 5: Solve for x
    x = 126,126,791,900.12/487,736.91
  6. Step 6: Final answer
    x = 258,595.95

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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.