Home / 278,344.27-417,488.71-128,582.42

Finding the Fourth Proportional to 278,344.27, 417,488.71 and 128,582.42

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Solution

The fourth proportional to 278,344.27, 417,488.71 and 128,582.42 is: 192,860.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,344.27 : 417,488.71 = 128,582.42 : x
  2. Step 2: Convert to fraction form
    278,344.27/417,488.71 = 128,582.42/x
  3. Step 3: Cross multiply
    278,344.27x = 417,488.71 × 128,582.42
  4. Step 4: Simplify right side
    278,344.27x = 53,681,706,245.58
  5. Step 5: Solve for x
    x = 53,681,706,245.58/278,344.27
  6. Step 6: Final answer
    x = 192,860.83

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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.