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Finding the Fourth Proportional to 205,323.40, 308,157.90 and 100,232.20

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Solution

The fourth proportional to 205,323.40, 308,157.90 and 100,232.20 is: 150,432.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,323.40 : 308,157.90 = 100,232.20 : x
  2. Step 2: Convert to fraction form
    205,323.40/308,157.90 = 100,232.20/x
  3. Step 3: Cross multiply
    205,323.40x = 308,157.90 × 100,232.20
  4. Step 4: Simplify right side
    205,323.40x = 30,887,344,264.38
  5. Step 5: Solve for x
    x = 30,887,344,264.38/205,323.40
  6. Step 6: Final answer
    x = 150,432.66

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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.