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Finding the Fourth Proportional to 332,409.20, 497,911.80 and 220,143.20

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Solution

The fourth proportional to 332,409.20, 497,911.80 and 220,143.20 is: 329,749.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,409.20 : 497,911.80 = 220,143.20 : x
  2. Step 2: Convert to fraction form
    332,409.20/497,911.80 = 220,143.20/x
  3. Step 3: Cross multiply
    332,409.20x = 497,911.80 × 220,143.20
  4. Step 4: Simplify right side
    332,409.20x = 109,611,896,969.76
  5. Step 5: Solve for x
    x = 109,611,896,969.76/332,409.20
  6. Step 6: Final answer
    x = 329,749.89

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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.