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Finding the Fourth Proportional to 172,440.80, 257,138.32 and 151,466.66

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Solution

The fourth proportional to 172,440.80, 257,138.32 and 151,466.66 is: 225,862.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,440.80 : 257,138.32 = 151,466.66 : x
  2. Step 2: Convert to fraction form
    172,440.80/257,138.32 = 151,466.66/x
  3. Step 3: Cross multiply
    172,440.80x = 257,138.32 × 151,466.66
  4. Step 4: Simplify right side
    172,440.80x = 38,947,882,488.41
  5. Step 5: Solve for x
    x = 38,947,882,488.41/172,440.80
  6. Step 6: Final answer
    x = 225,862.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.