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Finding the Fourth Proportional to 430,258.53, 645,167.48 and 252,818.85

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Solution

The fourth proportional to 430,258.53, 645,167.48 and 252,818.85 is: 379,098.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,258.53 : 645,167.48 = 252,818.85 : x
  2. Step 2: Convert to fraction form
    430,258.53/645,167.48 = 252,818.85/x
  3. Step 3: Cross multiply
    430,258.53x = 645,167.48 × 252,818.85
  4. Step 4: Simplify right side
    430,258.53x = 163,110,499,086.90
  5. Step 5: Solve for x
    x = 163,110,499,086.90/430,258.53
  6. Step 6: Final answer
    x = 379,098.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.