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Finding the Fourth Proportional to 478,987.38, 660,965.25 and 264,126.42

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Solution

The fourth proportional to 478,987.38, 660,965.25 and 264,126.42 is: 364,473.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,987.38 : 660,965.25 = 264,126.42 : x
  2. Step 2: Convert to fraction form
    478,987.38/660,965.25 = 264,126.42/x
  3. Step 3: Cross multiply
    478,987.38x = 660,965.25 × 264,126.42
  4. Step 4: Simplify right side
    478,987.38x = 174,578,385,226.91
  5. Step 5: Solve for x
    x = 174,578,385,226.91/478,987.38
  6. Step 6: Final answer
    x = 364,473.87

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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.