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Finding the Fourth Proportional to 381,748.01, 526,755.11 and 218,378.54

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Solution

The fourth proportional to 381,748.01, 526,755.11 and 218,378.54 is: 301,329.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,748.01 : 526,755.11 = 218,378.54 : x
  2. Step 2: Convert to fraction form
    381,748.01/526,755.11 = 218,378.54/x
  3. Step 3: Cross multiply
    381,748.01x = 526,755.11 × 218,378.54
  4. Step 4: Simplify right side
    381,748.01x = 115,032,013,722.17
  5. Step 5: Solve for x
    x = 115,032,013,722.17/381,748.01
  6. Step 6: Final answer
    x = 301,329.70

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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.