Home / 219,279.40-302,610.54-128,700.69

Finding the Fourth Proportional to 219,279.40, 302,610.54 and 128,700.69

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Solution

The fourth proportional to 219,279.40, 302,610.54 and 128,700.69 is: 177,609.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,279.40 : 302,610.54 = 128,700.69 : x
  2. Step 2: Convert to fraction form
    219,279.40/302,610.54 = 128,700.69/x
  3. Step 3: Cross multiply
    219,279.40x = 302,610.54 × 128,700.69
  4. Step 4: Simplify right side
    219,279.40x = 38,946,183,142.72
  5. Step 5: Solve for x
    x = 38,946,183,142.72/219,279.40
  6. Step 6: Final answer
    x = 177,609.86

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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.