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Finding the Fourth Proportional to 354,633, 489,052.18 and 238,607.88

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Solution

The fourth proportional to 354,633, 489,052.18 and 238,607.88 is: 329,049.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,633 : 489,052.18 = 238,607.88 : x
  2. Step 2: Convert to fraction form
    354,633/489,052.18 = 238,607.88/x
  3. Step 3: Cross multiply
    354,633x = 489,052.18 × 238,607.88
  4. Step 4: Simplify right side
    354,633x = 116,691,703,879.18
  5. Step 5: Solve for x
    x = 116,691,703,879.18/354,633
  6. Step 6: Final answer
    x = 329,049.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.