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Finding the Fourth Proportional to 381,841.60, 526,901.89 and 220,748.40

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Solution

The fourth proportional to 381,841.60, 526,901.89 and 220,748.40 is: 304,609.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,841.60 : 526,901.89 = 220,748.40 : x
  2. Step 2: Convert to fraction form
    381,841.60/526,901.89 = 220,748.40/x
  3. Step 3: Cross multiply
    381,841.60x = 526,901.89 × 220,748.40
  4. Step 4: Simplify right side
    381,841.60x = 116,312,749,174.48
  5. Step 5: Solve for x
    x = 116,312,749,174.48/381,841.60
  6. Step 6: Final answer
    x = 304,609.95

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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.