Home / 219,354.28-329,166.78-86,211.16

Finding the Fourth Proportional to 219,354.28, 329,166.78 and 86,211.16

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Solution

The fourth proportional to 219,354.28, 329,166.78 and 86,211.16 is: 129,369.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,354.28 : 329,166.78 = 86,211.16 : x
  2. Step 2: Convert to fraction form
    219,354.28/329,166.78 = 86,211.16/x
  3. Step 3: Cross multiply
    219,354.28x = 329,166.78 × 86,211.16
  4. Step 4: Simplify right side
    219,354.28x = 28,377,849,937.26
  5. Step 5: Solve for x
    x = 28,377,849,937.26/219,354.28
  6. Step 6: Final answer
    x = 129,369.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.