Home / 278,191.24-417,275.31-128,381.74

Finding the Fourth Proportional to 278,191.24, 417,275.31 and 128,381.74

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Solution

The fourth proportional to 278,191.24, 417,275.31 and 128,381.74 is: 192,567.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,191.24 : 417,275.31 = 128,381.74 : x
  2. Step 2: Convert to fraction form
    278,191.24/417,275.31 = 128,381.74/x
  3. Step 3: Cross multiply
    278,191.24x = 417,275.31 × 128,381.74
  4. Step 4: Simplify right side
    278,191.24x = 53,570,530,356.84
  5. Step 5: Solve for x
    x = 53,570,530,356.84/278,191.24
  6. Step 6: Final answer
    x = 192,567.28

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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.