Home / 280,246,962.40-386,741,647.92-156,492,155.68

Finding the Fourth Proportional to 280,246,962.40, 386,741,647.92 and 156,492,155.68

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Solution

The fourth proportional to 280,246,962.40, 386,741,647.92 and 156,492,155.68 is: 215,959,643.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,246,962.40 : 386,741,647.92 = 156,492,155.68 : x
  2. Step 2: Convert to fraction form
    280,246,962.40/386,741,647.92 = 156,492,155.68/x
  3. Step 3: Cross multiply
    280,246,962.40x = 386,741,647.92 × 156,492,155.68
  4. Step 4: Simplify right side
    280,246,962.40x = 60,522,034,174,236,392
  5. Step 5: Solve for x
    x = 60,522,034,174,236,392/280,246,962.40
  6. Step 6: Final answer
    x = 215,959,643.79

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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.