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Finding the Fourth Proportional to 425,434.86, 637,926.48 and 125,874.18

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Solution

The fourth proportional to 425,434.86, 637,926.48 and 125,874.18 is: 188,744.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,434.86 : 637,926.48 = 125,874.18 : x
  2. Step 2: Convert to fraction form
    425,434.86/637,926.48 = 125,874.18/x
  3. Step 3: Cross multiply
    425,434.86x = 637,926.48 × 125,874.18
  4. Step 4: Simplify right side
    425,434.86x = 80,298,472,570.29
  5. Step 5: Solve for x
    x = 80,298,472,570.29/425,434.86
  6. Step 6: Final answer
    x = 188,744.46

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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.