Home / 280,937.28-387,693.60-153,613.92

Finding the Fourth Proportional to 280,937.28, 387,693.60 and 153,613.92

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Solution

The fourth proportional to 280,937.28, 387,693.60 and 153,613.92 is: 211,987.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,937.28 : 387,693.60 = 153,613.92 : x
  2. Step 2: Convert to fraction form
    280,937.28/387,693.60 = 153,613.92/x
  3. Step 3: Cross multiply
    280,937.28x = 387,693.60 × 153,613.92
  4. Step 4: Simplify right side
    280,937.28x = 59,555,133,654.91
  5. Step 5: Solve for x
    x = 59,555,133,654.91/280,937.28
  6. Step 6: Final answer
    x = 211,987.29

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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.