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Finding the Fourth Proportional to 659,133.20, 988,642.20 and 215,901.20

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Solution

The fourth proportional to 659,133.20, 988,642.20 and 215,901.20 is: 323,832.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,133.20 : 988,642.20 = 215,901.20 : x
  2. Step 2: Convert to fraction form
    659,133.20/988,642.20 = 215,901.20/x
  3. Step 3: Cross multiply
    659,133.20x = 988,642.20 × 215,901.20
  4. Step 4: Simplify right side
    659,133.20x = 213,449,037,350.64
  5. Step 5: Solve for x
    x = 213,449,037,350.64/659,133.20
  6. Step 6: Final answer
    x = 323,832.93

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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.