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Finding the Fourth Proportional to 258,327.34, 387,498.32 and 71,338.84

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Solution

The fourth proportional to 258,327.34, 387,498.32 and 71,338.84 is: 107,010.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,327.34 : 387,498.32 = 71,338.84 : x
  2. Step 2: Convert to fraction form
    258,327.34/387,498.32 = 71,338.84/x
  3. Step 3: Cross multiply
    258,327.34x = 387,498.32 × 71,338.84
  4. Step 4: Simplify right side
    258,327.34x = 27,643,680,650.75
  5. Step 5: Solve for x
    x = 27,643,680,650.75/258,327.34
  6. Step 6: Final answer
    x = 107,010.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.