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Finding the Fourth Proportional to 478,262.64, 660,319.92 and 297,244.56

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Solution

The fourth proportional to 478,262.64, 660,319.92 and 297,244.56 is: 410,394.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,262.64 : 660,319.92 = 297,244.56 : x
  2. Step 2: Convert to fraction form
    478,262.64/660,319.92 = 297,244.56/x
  3. Step 3: Cross multiply
    478,262.64x = 660,319.92 × 297,244.56
  4. Step 4: Simplify right side
    478,262.64x = 196,276,504,079.64
  5. Step 5: Solve for x
    x = 196,276,504,079.64/478,262.64
  6. Step 6: Final answer
    x = 410,394.81

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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.