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Finding the Fourth Proportional to 387,765.72, 534,755.52 and 251,654.16

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Solution

The fourth proportional to 387,765.72, 534,755.52 and 251,654.16 is: 347,048.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,765.72 : 534,755.52 = 251,654.16 : x
  2. Step 2: Convert to fraction form
    387,765.72/534,755.52 = 251,654.16/x
  3. Step 3: Cross multiply
    387,765.72x = 534,755.52 × 251,654.16
  4. Step 4: Simplify right side
    387,765.72x = 134,573,451,190.96
  5. Step 5: Solve for x
    x = 134,573,451,190.96/387,765.72
  6. Step 6: Final answer
    x = 347,048.34

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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.