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Finding the Fourth Proportional to 172,002.40, 257,420.40 and 151,007.20

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Solution

The fourth proportional to 172,002.40, 257,420.40 and 151,007.20 is: 225,998.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,002.40 : 257,420.40 = 151,007.20 : x
  2. Step 2: Convert to fraction form
    172,002.40/257,420.40 = 151,007.20/x
  3. Step 3: Cross multiply
    172,002.40x = 257,420.40 × 151,007.20
  4. Step 4: Simplify right side
    172,002.40x = 38,872,333,826.88
  5. Step 5: Solve for x
    x = 38,872,333,826.88/172,002.40
  6. Step 6: Final answer
    x = 225,998.79

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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.