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Finding the Fourth Proportional to 218,967.90, 328,269.33 and 92,705.10

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Solution

The fourth proportional to 218,967.90, 328,269.33 and 92,705.10 is: 138,980.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,967.90 : 328,269.33 = 92,705.10 : x
  2. Step 2: Convert to fraction form
    218,967.90/328,269.33 = 92,705.10/x
  3. Step 3: Cross multiply
    218,967.90x = 328,269.33 × 92,705.10
  4. Step 4: Simplify right side
    218,967.90x = 30,432,241,064.58
  5. Step 5: Solve for x
    x = 30,432,241,064.58/218,967.90
  6. Step 6: Final answer
    x = 138,980.38

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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.