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Finding the Fourth Proportional to 430,371.38, 645,593.21 and 130,854.56

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Solution

The fourth proportional to 430,371.38, 645,593.21 and 130,854.56 is: 196,292.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,371.38 : 645,593.21 = 130,854.56 : x
  2. Step 2: Convert to fraction form
    430,371.38/645,593.21 = 130,854.56/x
  3. Step 3: Cross multiply
    430,371.38x = 645,593.21 × 130,854.56
  4. Step 4: Simplify right side
    430,371.38x = 84,478,816,409.52
  5. Step 5: Solve for x
    x = 84,478,816,409.52/430,371.38
  6. Step 6: Final answer
    x = 196,292.83

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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.