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Finding the Fourth Proportional to 221,790.30, 332,685.45 and 103,692.30

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Solution

The fourth proportional to 221,790.30, 332,685.45 and 103,692.30 is: 155,538.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,790.30 : 332,685.45 = 103,692.30 : x
  2. Step 2: Convert to fraction form
    221,790.30/332,685.45 = 103,692.30/x
  3. Step 3: Cross multiply
    221,790.30x = 332,685.45 × 103,692.30
  4. Step 4: Simplify right side
    221,790.30x = 34,496,919,487.04
  5. Step 5: Solve for x
    x = 34,496,919,487.04/221,790.30
  6. Step 6: Final answer
    x = 155,538.45

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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.