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Finding the Fourth Proportional to 389,915.48, 584,894.01 and 123,697.28

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Solution

The fourth proportional to 389,915.48, 584,894.01 and 123,697.28 is: 185,552.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,915.48 : 584,894.01 = 123,697.28 : x
  2. Step 2: Convert to fraction form
    389,915.48/584,894.01 = 123,697.28/x
  3. Step 3: Cross multiply
    389,915.48x = 584,894.01 × 123,697.28
  4. Step 4: Simplify right side
    389,915.48x = 72,349,798,125.29
  5. Step 5: Solve for x
    x = 72,349,798,125.29/389,915.48
  6. Step 6: Final answer
    x = 185,552.52

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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.