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Finding the Fourth Proportional to 381,258.90, 526,684.95 and 304,677.72

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Solution

The fourth proportional to 381,258.90, 526,684.95 and 304,677.72 is: 420,892.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,258.90 : 526,684.95 = 304,677.72 : x
  2. Step 2: Convert to fraction form
    381,258.90/526,684.95 = 304,677.72/x
  3. Step 3: Cross multiply
    381,258.90x = 526,684.95 × 304,677.72
  4. Step 4: Simplify right side
    381,258.90x = 160,469,169,724.31
  5. Step 5: Solve for x
    x = 160,469,169,724.31/381,258.90
  6. Step 6: Final answer
    x = 420,892.91

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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.