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Finding the Fourth Proportional to 393,048.30, 588,211.65 and 235,389.90

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Solution

The fourth proportional to 393,048.30, 588,211.65 and 235,389.90 is: 352,269.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,048.30 : 588,211.65 = 235,389.90 : x
  2. Step 2: Convert to fraction form
    393,048.30/588,211.65 = 235,389.90/x
  3. Step 3: Cross multiply
    393,048.30x = 588,211.65 × 235,389.90
  4. Step 4: Simplify right side
    393,048.30x = 138,459,081,472.34
  5. Step 5: Solve for x
    x = 138,459,081,472.34/393,048.30
  6. Step 6: Final answer
    x = 352,269.89

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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.