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Finding the Fourth Proportional to 323,814.90, 485,428.30 and 113,338.02

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Solution

The fourth proportional to 323,814.90, 485,428.30 and 113,338.02 is: 169,904.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,814.90 : 485,428.30 = 113,338.02 : x
  2. Step 2: Convert to fraction form
    323,814.90/485,428.30 = 113,338.02/x
  3. Step 3: Cross multiply
    323,814.90x = 485,428.30 × 113,338.02
  4. Step 4: Simplify right side
    323,814.90x = 55,017,482,373.97
  5. Step 5: Solve for x
    x = 55,017,482,373.97/323,814.90
  6. Step 6: Final answer
    x = 169,904.11

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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.