Home / 278,965.04-384,989.65-156,468.92

Finding the Fourth Proportional to 278,965.04, 384,989.65 and 156,468.92

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Solution

The fourth proportional to 278,965.04, 384,989.65 and 156,468.92 is: 215,937.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,965.04 : 384,989.65 = 156,468.92 : x
  2. Step 2: Convert to fraction form
    278,965.04/384,989.65 = 156,468.92/x
  3. Step 3: Cross multiply
    278,965.04x = 384,989.65 × 156,468.92
  4. Step 4: Simplify right side
    278,965.04x = 60,238,914,746.68
  5. Step 5: Solve for x
    x = 60,238,914,746.68/278,965.04
  6. Step 6: Final answer
    x = 215,937.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.