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Finding the Fourth Proportional to 238,620.20, 357,922.04 and 61,128.96

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Solution

The fourth proportional to 238,620.20, 357,922.04 and 61,128.96 is: 91,691.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,620.20 : 357,922.04 = 61,128.96 : x
  2. Step 2: Convert to fraction form
    238,620.20/357,922.04 = 61,128.96/x
  3. Step 3: Cross multiply
    238,620.20x = 357,922.04 × 61,128.96
  4. Step 4: Simplify right side
    238,620.20x = 21,879,402,066.28
  5. Step 5: Solve for x
    x = 21,879,402,066.28/238,620.20
  6. Step 6: Final answer
    x = 91,691.32

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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.