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Finding the Fourth Proportional to 258,505.68, 387,820.40 and 125,230.24

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Solution

The fourth proportional to 258,505.68, 387,820.40 and 125,230.24 is: 187,875.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,505.68 : 387,820.40 = 125,230.24 : x
  2. Step 2: Convert to fraction form
    258,505.68/387,820.40 = 125,230.24/x
  3. Step 3: Cross multiply
    258,505.68x = 387,820.40 × 125,230.24
  4. Step 4: Simplify right side
    258,505.68x = 48,566,841,768.90
  5. Step 5: Solve for x
    x = 48,566,841,768.90/258,505.68
  6. Step 6: Final answer
    x = 187,875.34

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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.