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Finding the Fourth Proportional to 308,545.38, 425,832.06 and 172,586.88

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Solution

The fourth proportional to 308,545.38, 425,832.06 and 172,586.88 is: 238,191.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,545.38 : 425,832.06 = 172,586.88 : x
  2. Step 2: Convert to fraction form
    308,545.38/425,832.06 = 172,586.88/x
  3. Step 3: Cross multiply
    308,545.38x = 425,832.06 × 172,586.88
  4. Step 4: Simplify right side
    308,545.38x = 73,493,026,639.37
  5. Step 5: Solve for x
    x = 73,493,026,639.37/308,545.38
  6. Step 6: Final answer
    x = 238,191.95

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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.