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Finding the Fourth Proportional to 172,975.60, 260,046.60 and 147,314.80

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Solution

The fourth proportional to 172,975.60, 260,046.60 and 147,314.80 is: 221,468.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,975.60 : 260,046.60 = 147,314.80 : x
  2. Step 2: Convert to fraction form
    172,975.60/260,046.60 = 147,314.80/x
  3. Step 3: Cross multiply
    172,975.60x = 260,046.60 × 147,314.80
  4. Step 4: Simplify right side
    172,975.60x = 38,308,712,869.68
  5. Step 5: Solve for x
    x = 38,308,712,869.68/172,975.60
  6. Step 6: Final answer
    x = 221,468.88

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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.