Home / 215,815.16-297,719.07-144,212.78

Finding the Fourth Proportional to 215,815.16, 297,719.07 and 144,212.78

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Solution

The fourth proportional to 215,815.16, 297,719.07 and 144,212.78 is: 198,942.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,815.16 : 297,719.07 = 144,212.78 : x
  2. Step 2: Convert to fraction form
    215,815.16/297,719.07 = 144,212.78/x
  3. Step 3: Cross multiply
    215,815.16x = 297,719.07 × 144,212.78
  4. Step 4: Simplify right side
    215,815.16x = 42,934,894,743.71
  5. Step 5: Solve for x
    x = 42,934,894,743.71/215,815.16
  6. Step 6: Final answer
    x = 198,942.90

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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.