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Finding the Fourth Proportional to 221,437.80, 332,156.70 and 153,531.45

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Solution

The fourth proportional to 221,437.80, 332,156.70 and 153,531.45 is: 230,297.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,437.80 : 332,156.70 = 153,531.45 : x
  2. Step 2: Convert to fraction form
    221,437.80/332,156.70 = 153,531.45/x
  3. Step 3: Cross multiply
    221,437.80x = 332,156.70 × 153,531.45
  4. Step 4: Simplify right side
    221,437.80x = 50,996,499,778.22
  5. Step 5: Solve for x
    x = 50,996,499,778.22/221,437.80
  6. Step 6: Final answer
    x = 230,297.18

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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.