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Finding the Fourth Proportional to 478,045.70, 659,690.28 and 263,187.38

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Solution

The fourth proportional to 478,045.70, 659,690.28 and 263,187.38 is: 363,191.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,045.70 : 659,690.28 = 263,187.38 : x
  2. Step 2: Convert to fraction form
    478,045.70/659,690.28 = 263,187.38/x
  3. Step 3: Cross multiply
    478,045.70x = 659,690.28 × 263,187.38
  4. Step 4: Simplify right side
    478,045.70x = 173,622,156,404.67
  5. Step 5: Solve for x
    x = 173,622,156,404.67/478,045.70
  6. Step 6: Final answer
    x = 363,191.55

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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.