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Finding the Fourth Proportional to 258,591.44, 387,887.16 and 71,598.80

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Solution

The fourth proportional to 258,591.44, 387,887.16 and 71,598.80 is: 107,398.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,591.44 : 387,887.16 = 71,598.80 : x
  2. Step 2: Convert to fraction form
    258,591.44/387,887.16 = 71,598.80/x
  3. Step 3: Cross multiply
    258,591.44x = 387,887.16 × 71,598.80
  4. Step 4: Simplify right side
    258,591.44x = 27,772,255,191.41
  5. Step 5: Solve for x
    x = 27,772,255,191.41/258,591.44
  6. Step 6: Final answer
    x = 107,398.20

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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.