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Finding the Fourth Proportional to 386,244.02, 579,391.95 and 133,549.13

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Solution

The fourth proportional to 386,244.02, 579,391.95 and 133,549.13 is: 200,332.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,244.02 : 579,391.95 = 133,549.13 : x
  2. Step 2: Convert to fraction form
    386,244.02/579,391.95 = 133,549.13/x
  3. Step 3: Cross multiply
    386,244.02x = 579,391.95 × 133,549.13
  4. Step 4: Simplify right side
    386,244.02x = 77,377,290,851.50
  5. Step 5: Solve for x
    x = 77,377,290,851.50/386,244.02
  6. Step 6: Final answer
    x = 200,332.66

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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.