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Finding the Fourth Proportional to 308,191.56, 425,294.70 and 180,864.42

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Solution

The fourth proportional to 308,191.56, 425,294.70 and 180,864.42 is: 249,587.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,191.56 : 425,294.70 = 180,864.42 : x
  2. Step 2: Convert to fraction form
    308,191.56/425,294.70 = 180,864.42/x
  3. Step 3: Cross multiply
    308,191.56x = 425,294.70 × 180,864.42
  4. Step 4: Simplify right side
    308,191.56x = 76,920,679,244.57
  5. Step 5: Solve for x
    x = 76,920,679,244.57/308,191.56
  6. Step 6: Final answer
    x = 249,587.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.