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Finding the Fourth Proportional to 390,472.84, 585,876.84 and 124,255

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Solution

The fourth proportional to 390,472.84, 585,876.84 and 124,255 is: 186,435.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,472.84 : 585,876.84 = 124,255 : x
  2. Step 2: Convert to fraction form
    390,472.84/585,876.84 = 124,255/x
  3. Step 3: Cross multiply
    390,472.84x = 585,876.84 × 124,255
  4. Step 4: Simplify right side
    390,472.84x = 72,798,126,754.20
  5. Step 5: Solve for x
    x = 72,798,126,754.20/390,472.84
  6. Step 6: Final answer
    x = 186,435.83

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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.