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Finding the Fourth Proportional to 308,322.06, 425,553.12 and 187,437.78

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Solution

The fourth proportional to 308,322.06, 425,553.12 and 187,437.78 is: 258,705.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,322.06 : 425,553.12 = 187,437.78 : x
  2. Step 2: Convert to fraction form
    308,322.06/425,553.12 = 187,437.78/x
  3. Step 3: Cross multiply
    308,322.06x = 425,553.12 × 187,437.78
  4. Step 4: Simplify right side
    308,322.06x = 79,764,732,084.87
  5. Step 5: Solve for x
    x = 79,764,732,084.87/308,322.06
  6. Step 6: Final answer
    x = 258,705.89

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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.