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Finding the Fourth Proportional to 381,836.60, 526,903.65 and 220,702.08

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Solution

The fourth proportional to 381,836.60, 526,903.65 and 220,702.08 is: 304,551.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,836.60 : 526,903.65 = 220,702.08 : x
  2. Step 2: Convert to fraction form
    381,836.60/526,903.65 = 220,702.08/x
  3. Step 3: Cross multiply
    381,836.60x = 526,903.65 × 220,702.08
  4. Step 4: Simplify right side
    381,836.60x = 116,288,731,514.59
  5. Step 5: Solve for x
    x = 116,288,731,514.59/381,836.60
  6. Step 6: Final answer
    x = 304,551.03

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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.