Home / 219,279.32-302,610.44-128,700.62

Finding the Fourth Proportional to 219,279.32, 302,610.44 and 128,700.62

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Solution

The fourth proportional to 219,279.32, 302,610.44 and 128,700.62 is: 177,609.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,279.32 : 302,610.44 = 128,700.62 : x
  2. Step 2: Convert to fraction form
    219,279.32/302,610.44 = 128,700.62/x
  3. Step 3: Cross multiply
    219,279.32x = 302,610.44 × 128,700.62
  4. Step 4: Simplify right side
    219,279.32x = 38,946,151,246.47
  5. Step 5: Solve for x
    x = 38,946,151,246.47/219,279.32
  6. Step 6: Final answer
    x = 177,609.78

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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.