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Finding the Fourth Proportional to 426,634.56, 640,047.29 and 160,397.38

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Solution

The fourth proportional to 426,634.56, 640,047.29 and 160,397.38 is: 240,631.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,634.56 : 640,047.29 = 160,397.38 : x
  2. Step 2: Convert to fraction form
    426,634.56/640,047.29 = 160,397.38/x
  3. Step 3: Cross multiply
    426,634.56x = 640,047.29 × 160,397.38
  4. Step 4: Simplify right side
    426,634.56x = 102,661,908,390.17
  5. Step 5: Solve for x
    x = 102,661,908,390.17/426,634.56
  6. Step 6: Final answer
    x = 240,631.96

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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.