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Finding the Fourth Proportional to 258,114.20, 387,171.30 and 242,562.20

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Solution

The fourth proportional to 258,114.20, 387,171.30 and 242,562.20 is: 363,843.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,114.20 : 387,171.30 = 242,562.20 : x
  2. Step 2: Convert to fraction form
    258,114.20/387,171.30 = 242,562.20/x
  3. Step 3: Cross multiply
    258,114.20x = 387,171.30 × 242,562.20
  4. Step 4: Simplify right side
    258,114.20x = 93,913,122,304.86
  5. Step 5: Solve for x
    x = 93,913,122,304.86/258,114.20
  6. Step 6: Final answer
    x = 363,843.30

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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.