Home / 312,440.12-431,167.80-169,200.38

Finding the Fourth Proportional to 312,440.12, 431,167.80 and 169,200.38

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Solution

The fourth proportional to 312,440.12, 431,167.80 and 169,200.38 is: 233,496.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,440.12 : 431,167.80 = 169,200.38 : x
  2. Step 2: Convert to fraction form
    312,440.12/431,167.80 = 169,200.38/x
  3. Step 3: Cross multiply
    312,440.12x = 431,167.80 × 169,200.38
  4. Step 4: Simplify right side
    312,440.12x = 72,953,755,603.76
  5. Step 5: Solve for x
    x = 72,953,755,603.76/312,440.12
  6. Step 6: Final answer
    x = 233,496.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.