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Finding the Fourth Proportional to 487,188.92, 671,708.94 and 372,608.12

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Solution

The fourth proportional to 487,188.92, 671,708.94 and 372,608.12 is: 513,731.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,188.92 : 671,708.94 = 372,608.12 : x
  2. Step 2: Convert to fraction form
    487,188.92/671,708.94 = 372,608.12/x
  3. Step 3: Cross multiply
    487,188.92x = 671,708.94 × 372,608.12
  4. Step 4: Simplify right side
    487,188.92x = 250,284,205,320.59
  5. Step 5: Solve for x
    x = 250,284,205,320.59/487,188.92
  6. Step 6: Final answer
    x = 513,731.32

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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.