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Finding the Fourth Proportional to 214,781.80, 322,019.10 and 96,356.20

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Solution

The fourth proportional to 214,781.80, 322,019.10 and 96,356.20 is: 144,465.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,781.80 : 322,019.10 = 96,356.20 : x
  2. Step 2: Convert to fraction form
    214,781.80/322,019.10 = 96,356.20/x
  3. Step 3: Cross multiply
    214,781.80x = 322,019.10 × 96,356.20
  4. Step 4: Simplify right side
    214,781.80x = 31,028,536,803.42
  5. Step 5: Solve for x
    x = 31,028,536,803.42/214,781.80
  6. Step 6: Final answer
    x = 144,465.39

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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.