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Finding the Fourth Proportional to 478,257.55, 660,025.26 and 263,397.56

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Solution

The fourth proportional to 478,257.55, 660,025.26 and 263,397.56 is: 363,505.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,257.55 : 660,025.26 = 263,397.56 : x
  2. Step 2: Convert to fraction form
    478,257.55/660,025.26 = 263,397.56/x
  3. Step 3: Cross multiply
    478,257.55x = 660,025.26 × 263,397.56
  4. Step 4: Simplify right side
    478,257.55x = 173,849,041,705.38
  5. Step 5: Solve for x
    x = 173,849,041,705.38/478,257.55
  6. Step 6: Final answer
    x = 363,505.06

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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.