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Finding the Fourth Proportional to 381,209.28, 571,897.08 and 144,554.28

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Solution

The fourth proportional to 381,209.28, 571,897.08 and 144,554.28 is: 216,862.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,209.28 : 571,897.08 = 144,554.28 : x
  2. Step 2: Convert to fraction form
    381,209.28/571,897.08 = 144,554.28/x
  3. Step 3: Cross multiply
    381,209.28x = 571,897.08 × 144,554.28
  4. Step 4: Simplify right side
    381,209.28x = 82,670,170,633.50
  5. Step 5: Solve for x
    x = 82,670,170,633.50/381,209.28
  6. Step 6: Final answer
    x = 216,862.95

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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.