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Finding the Fourth Proportional to 478,545.33, 660,421.97 and 263,685.33

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Solution

The fourth proportional to 478,545.33, 660,421.97 and 263,685.33 is: 363,901.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,545.33 : 660,421.97 = 263,685.33 : x
  2. Step 2: Convert to fraction form
    478,545.33/660,421.97 = 263,685.33/x
  3. Step 3: Cross multiply
    478,545.33x = 660,421.97 × 263,685.33
  4. Step 4: Simplify right side
    478,545.33x = 174,143,585,098.70
  5. Step 5: Solve for x
    x = 174,143,585,098.70/478,545.33
  6. Step 6: Final answer
    x = 363,901.96

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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.