Home / 278,472.08-417,641.27-128,568.36

Finding the Fourth Proportional to 278,472.08, 417,641.27 and 128,568.36

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Solution

The fourth proportional to 278,472.08, 417,641.27 and 128,568.36 is: 192,821.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,472.08 : 417,641.27 = 128,568.36 : x
  2. Step 2: Convert to fraction form
    278,472.08/417,641.27 = 128,568.36/x
  3. Step 3: Cross multiply
    278,472.08x = 417,641.27 × 128,568.36
  4. Step 4: Simplify right side
    278,472.08x = 53,695,454,075.53
  5. Step 5: Solve for x
    x = 53,695,454,075.53/278,472.08
  6. Step 6: Final answer
    x = 192,821.68

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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.