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Finding the Fourth Proportional to 330,582.72, 495,883.44 and 81,264

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Solution

The fourth proportional to 330,582.72, 495,883.44 and 81,264 is: 121,898.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,582.72 : 495,883.44 = 81,264 : x
  2. Step 2: Convert to fraction form
    330,582.72/495,883.44 = 81,264/x
  3. Step 3: Cross multiply
    330,582.72x = 495,883.44 × 81,264
  4. Step 4: Simplify right side
    330,582.72x = 40,297,471,868.16
  5. Step 5: Solve for x
    x = 40,297,471,868.16/330,582.72
  6. Step 6: Final answer
    x = 121,898.30

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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.