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Finding the Fourth Proportional to 245,354.52, 368,031.30 and 76,887.72

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Solution

The fourth proportional to 245,354.52, 368,031.30 and 76,887.72 is: 115,331.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,354.52 : 368,031.30 = 76,887.72 : x
  2. Step 2: Convert to fraction form
    245,354.52/368,031.30 = 76,887.72/x
  3. Step 3: Cross multiply
    245,354.52x = 368,031.30 × 76,887.72
  4. Step 4: Simplify right side
    245,354.52x = 28,297,087,545.64
  5. Step 5: Solve for x
    x = 28,297,087,545.64/245,354.52
  6. Step 6: Final answer
    x = 115,331.43

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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.