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Finding the Fourth Proportional to 451,818.76, 677,837.49 and 136,256.53

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Solution

The fourth proportional to 451,818.76, 677,837.49 and 136,256.53 is: 204,417.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,818.76 : 677,837.49 = 136,256.53 : x
  2. Step 2: Convert to fraction form
    451,818.76/677,837.49 = 136,256.53/x
  3. Step 3: Cross multiply
    451,818.76x = 677,837.49 × 136,256.53
  4. Step 4: Simplify right side
    451,818.76x = 92,359,784,291.31
  5. Step 5: Solve for x
    x = 92,359,784,291.31/451,818.76
  6. Step 6: Final answer
    x = 204,417.77

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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.