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Finding the Fourth Proportional to 487,139.92, 730,693.48 and 171,588.63

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Solution

The fourth proportional to 487,139.92, 730,693.48 and 171,588.63 is: 257,377.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,139.92 : 730,693.48 = 171,588.63 : x
  2. Step 2: Convert to fraction form
    487,139.92/730,693.48 = 171,588.63/x
  3. Step 3: Cross multiply
    487,139.92x = 730,693.48 × 171,588.63
  4. Step 4: Simplify right side
    487,139.92x = 125,378,689,100.69
  5. Step 5: Solve for x
    x = 125,378,689,100.69/487,139.92
  6. Step 6: Final answer
    x = 257,377.16

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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.