Home / 280,046.13-386,486.78-159,225.45

Finding the Fourth Proportional to 280,046.13, 386,486.78 and 159,225.45

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Solution

The fourth proportional to 280,046.13, 386,486.78 and 159,225.45 is: 219,744.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,046.13 : 386,486.78 = 159,225.45 : x
  2. Step 2: Convert to fraction form
    280,046.13/386,486.78 = 159,225.45/x
  3. Step 3: Cross multiply
    280,046.13x = 386,486.78 × 159,225.45
  4. Step 4: Simplify right side
    280,046.13x = 61,538,530,668.42
  5. Step 5: Solve for x
    x = 61,538,530,668.42/280,046.13
  6. Step 6: Final answer
    x = 219,744.26

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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.