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Finding the Fourth Proportional to 238,782.54, 358,177.68 and 81,015.06

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Solution

The fourth proportional to 238,782.54, 358,177.68 and 81,015.06 is: 121,523.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,782.54 : 358,177.68 = 81,015.06 : x
  2. Step 2: Convert to fraction form
    238,782.54/358,177.68 = 81,015.06/x
  3. Step 3: Cross multiply
    238,782.54x = 358,177.68 × 81,015.06
  4. Step 4: Simplify right side
    238,782.54x = 29,017,786,235.86
  5. Step 5: Solve for x
    x = 29,017,786,235.86/238,782.54
  6. Step 6: Final answer
    x = 121,523.90

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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.