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Finding the Fourth Proportional to 659,215, 988,236.06 and 238,397.32

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Solution

The fourth proportional to 659,215, 988,236.06 and 238,397.32 is: 357,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,215 : 988,236.06 = 238,397.32 : x
  2. Step 2: Convert to fraction form
    659,215/988,236.06 = 238,397.32/x
  3. Step 3: Cross multiply
    659,215x = 988,236.06 × 238,397.32
  4. Step 4: Simplify right side
    659,215x = 235,592,828,231.36
  5. Step 5: Solve for x
    x = 235,592,828,231.36/659,215
  6. Step 6: Final answer
    x = 357,383.90

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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.