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Finding the Fourth Proportional to 295,660.80, 443,491.20 and 145,972.80

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Solution

The fourth proportional to 295,660.80, 443,491.20 and 145,972.80 is: 218,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,660.80 : 443,491.20 = 145,972.80 : x
  2. Step 2: Convert to fraction form
    295,660.80/443,491.20 = 145,972.80/x
  3. Step 3: Cross multiply
    295,660.80x = 443,491.20 × 145,972.80
  4. Step 4: Simplify right side
    295,660.80x = 64,737,652,239.36
  5. Step 5: Solve for x
    x = 64,737,652,239.36/295,660.80
  6. Step 6: Final answer
    x = 218,959.20

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1.5x scale

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.