Home / 278,815.49-417,988.10-120,925.02

Finding the Fourth Proportional to 278,815.49, 417,988.10 and 120,925.02

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Solution

The fourth proportional to 278,815.49, 417,988.10 and 120,925.02 is: 181,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,815.49 : 417,988.10 = 120,925.02 : x
  2. Step 2: Convert to fraction form
    278,815.49/417,988.10 = 120,925.02/x
  3. Step 3: Cross multiply
    278,815.49x = 417,988.10 × 120,925.02
  4. Step 4: Simplify right side
    278,815.49x = 50,545,218,747.64
  5. Step 5: Solve for x
    x = 50,545,218,747.64/278,815.49
  6. Step 6: Final answer
    x = 181,285.55

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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.