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Finding the Fourth Proportional to 425,711.61, 587,496.20 and 253,606.05

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Solution

The fourth proportional to 425,711.61, 587,496.20 and 253,606.05 is: 349,984.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,711.61 : 587,496.20 = 253,606.05 : x
  2. Step 2: Convert to fraction form
    425,711.61/587,496.20 = 253,606.05/x
  3. Step 3: Cross multiply
    425,711.61x = 587,496.20 × 253,606.05
  4. Step 4: Simplify right side
    425,711.61x = 148,992,589,403.98
  5. Step 5: Solve for x
    x = 148,992,589,403.98/425,711.61
  6. Step 6: Final answer
    x = 349,984.79

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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.