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Finding the Fourth Proportional to 252,155.52, 378,288.63 and 74,676.42

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Solution

The fourth proportional to 252,155.52, 378,288.63 and 74,676.42 is: 112,031.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,155.52 : 378,288.63 = 74,676.42 : x
  2. Step 2: Convert to fraction form
    252,155.52/378,288.63 = 74,676.42/x
  3. Step 3: Cross multiply
    252,155.52x = 378,288.63 × 74,676.42
  4. Step 4: Simplify right side
    252,155.52x = 28,249,240,615.10
  5. Step 5: Solve for x
    x = 28,249,240,615.10/252,155.52
  6. Step 6: Final answer
    x = 112,031.02

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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.