Home / 457,139.50-685,576.85-137,278.46

Finding the Fourth Proportional to 457,139.50, 685,576.85 and 137,278.46

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Solution

The fourth proportional to 457,139.50, 685,576.85 and 137,278.46 is: 205,877.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,139.50 : 685,576.85 = 137,278.46 : x
  2. Step 2: Convert to fraction form
    457,139.50/685,576.85 = 137,278.46/x
  3. Step 3: Cross multiply
    457,139.50x = 685,576.85 × 137,278.46
  4. Step 4: Simplify right side
    457,139.50x = 94,114,934,179.65
  5. Step 5: Solve for x
    x = 94,114,934,179.65/457,139.50
  6. Step 6: Final answer
    x = 205,877.93

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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.