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Finding the Fourth Proportional to 425,926.56, 638,814.88 and 155,998.92

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Solution

The fourth proportional to 425,926.56, 638,814.88 and 155,998.92 is: 233,970.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,926.56 : 638,814.88 = 155,998.92 : x
  2. Step 2: Convert to fraction form
    425,926.56/638,814.88 = 155,998.92/x
  3. Step 3: Cross multiply
    425,926.56x = 638,814.88 × 155,998.92
  4. Step 4: Simplify right side
    425,926.56x = 99,654,431,359.93
  5. Step 5: Solve for x
    x = 99,654,431,359.93/425,926.56
  6. Step 6: Final answer
    x = 233,970.93

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1.5x scale

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.