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Finding the Fourth Proportional to 381,875.60, 526,869.72 and 220,671.92

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Solution

The fourth proportional to 381,875.60, 526,869.72 and 220,671.92 is: 304,458.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,875.60 : 526,869.72 = 220,671.92 : x
  2. Step 2: Convert to fraction form
    381,875.60/526,869.72 = 220,671.92/x
  3. Step 3: Cross multiply
    381,875.60x = 526,869.72 × 220,671.92
  4. Step 4: Simplify right side
    381,875.60x = 116,265,352,702.26
  5. Step 5: Solve for x
    x = 116,265,352,702.26/381,875.60
  6. Step 6: Final answer
    x = 304,458.71

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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.