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Finding the Fourth Proportional to 172,132.80, 257,680.80 and 153,470.40

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Solution

The fourth proportional to 172,132.80, 257,680.80 and 153,470.40 is: 229,743.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,132.80 : 257,680.80 = 153,470.40 : x
  2. Step 2: Convert to fraction form
    172,132.80/257,680.80 = 153,470.40/x
  3. Step 3: Cross multiply
    172,132.80x = 257,680.80 × 153,470.40
  4. Step 4: Simplify right side
    172,132.80x = 39,546,375,448.32
  5. Step 5: Solve for x
    x = 39,546,375,448.32/172,132.80
  6. Step 6: Final answer
    x = 229,743.40

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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.