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Finding the Fourth Proportional to 258,337.60, 356,627 and 172,441.72

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Solution

The fourth proportional to 258,337.60, 356,627 and 172,441.72 is: 238,050.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,337.60 : 356,627 = 172,441.72 : x
  2. Step 2: Convert to fraction form
    258,337.60/356,627 = 172,441.72/x
  3. Step 3: Cross multiply
    258,337.60x = 356,627 × 172,441.72
  4. Step 4: Simplify right side
    258,337.60x = 61,497,373,278.44
  5. Step 5: Solve for x
    x = 61,497,373,278.44/258,337.60
  6. Step 6: Final answer
    x = 238,050.42

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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.