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Finding the Fourth Proportional to 390,042, 585,063 and 94,554

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Solution

The fourth proportional to 390,042, 585,063 and 94,554 is: 141,831

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,042 : 585,063 = 94,554 : x
  2. Step 2: Convert to fraction form
    390,042/585,063 = 94,554/x
  3. Step 3: Cross multiply
    390,042x = 585,063 × 94,554
  4. Step 4: Simplify right side
    390,042x = 55,320,046,902
  5. Step 5: Solve for x
    x = 55,320,046,902/390,042
  6. Step 6: Final answer
    x = 141,831

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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.