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Finding the Fourth Proportional to 345,445.56, 518,318.46 and 120,967.02

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Solution

The fourth proportional to 345,445.56, 518,318.46 and 120,967.02 is: 181,503.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,445.56 : 518,318.46 = 120,967.02 : x
  2. Step 2: Convert to fraction form
    345,445.56/518,318.46 = 120,967.02/x
  3. Step 3: Cross multiply
    345,445.56x = 518,318.46 × 120,967.02
  4. Step 4: Simplify right side
    345,445.56x = 62,699,439,517.19
  5. Step 5: Solve for x
    x = 62,699,439,517.19/345,445.56
  6. Step 6: Final answer
    x = 181,503.10

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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.