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Finding the Fourth Proportional to 201,432.80, 301,821.15 and 148,288.70

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Solution

The fourth proportional to 201,432.80, 301,821.15 and 148,288.70 is: 222,191.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,432.80 : 301,821.15 = 148,288.70 : x
  2. Step 2: Convert to fraction form
    201,432.80/301,821.15 = 148,288.70/x
  3. Step 3: Cross multiply
    201,432.80x = 301,821.15 × 148,288.70
  4. Step 4: Simplify right side
    201,432.80x = 44,756,665,966.01
  5. Step 5: Solve for x
    x = 44,756,665,966.01/201,432.80
  6. Step 6: Final answer
    x = 222,191.55

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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.