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Finding the Fourth Proportional to 381,017.60, 571,526.40 and 192,060.80

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Solution

The fourth proportional to 381,017.60, 571,526.40 and 192,060.80 is: 288,091.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,017.60 : 571,526.40 = 192,060.80 : x
  2. Step 2: Convert to fraction form
    381,017.60/571,526.40 = 192,060.80/x
  3. Step 3: Cross multiply
    381,017.60x = 571,526.40 × 192,060.80
  4. Step 4: Simplify right side
    381,017.60x = 109,767,817,605.12
  5. Step 5: Solve for x
    x = 109,767,817,605.12/381,017.60
  6. Step 6: Final answer
    x = 288,091.20

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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.