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Finding the Fourth Proportional to 172,059.40, 257,570.70 and 151,323.40

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Solution

The fourth proportional to 172,059.40, 257,570.70 and 151,323.40 is: 226,529.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,059.40 : 257,570.70 = 151,323.40 : x
  2. Step 2: Convert to fraction form
    172,059.40/257,570.70 = 151,323.40/x
  3. Step 3: Cross multiply
    172,059.40x = 257,570.70 × 151,323.40
  4. Step 4: Simplify right side
    172,059.40x = 38,976,474,064.38
  5. Step 5: Solve for x
    x = 38,976,474,064.38/172,059.40
  6. Step 6: Final answer
    x = 226,529.18

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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.