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Finding the Fourth Proportional to 292,292.87, 438,389.89 and 81,882.41

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Solution

The fourth proportional to 292,292.87, 438,389.89 and 81,882.41 is: 122,809.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,292.87 : 438,389.89 = 81,882.41 : x
  2. Step 2: Convert to fraction form
    292,292.87/438,389.89 = 81,882.41/x
  3. Step 3: Cross multiply
    292,292.87x = 438,389.89 × 81,882.41
  4. Step 4: Simplify right side
    292,292.87x = 35,896,418,316.18
  5. Step 5: Solve for x
    x = 35,896,418,316.18/292,292.87
  6. Step 6: Final answer
    x = 122,809.77

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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.