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Finding the Fourth Proportional to 238,808.17, 358,135.98 and 78,854.32

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Solution

The fourth proportional to 238,808.17, 358,135.98 and 78,854.32 is: 118,256.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,808.17 : 358,135.98 = 78,854.32 : x
  2. Step 2: Convert to fraction form
    238,808.17/358,135.98 = 78,854.32/x
  3. Step 3: Cross multiply
    238,808.17x = 358,135.98 × 78,854.32
  4. Step 4: Simplify right side
    238,808.17x = 28,240,569,170.43
  5. Step 5: Solve for x
    x = 28,240,569,170.43/238,808.17
  6. Step 6: Final answer
    x = 118,256.29

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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.