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Finding the Fourth Proportional to 486,947.71, 730,458.33 and 145,364.21

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Solution

The fourth proportional to 486,947.71, 730,458.33 and 145,364.21 is: 218,057.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,947.71 : 730,458.33 = 145,364.21 : x
  2. Step 2: Convert to fraction form
    486,947.71/730,458.33 = 145,364.21/x
  3. Step 3: Cross multiply
    486,947.71x = 730,458.33 × 145,364.21
  4. Step 4: Simplify right side
    486,947.71x = 106,182,498,078.37
  5. Step 5: Solve for x
    x = 106,182,498,078.37/486,947.71
  6. Step 6: Final answer
    x = 218,057.29

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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.