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Finding the Fourth Proportional to 345,694.60, 518,423.10 and 168,087.16

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Solution

The fourth proportional to 345,694.60, 518,423.10 and 168,087.16 is: 252,072.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,694.60 : 518,423.10 = 168,087.16 : x
  2. Step 2: Convert to fraction form
    345,694.60/518,423.10 = 168,087.16/x
  3. Step 3: Cross multiply
    345,694.60x = 518,423.10 × 168,087.16
  4. Step 4: Simplify right side
    345,694.60x = 87,140,266,557.40
  5. Step 5: Solve for x
    x = 87,140,266,557.40/345,694.60
  6. Step 6: Final answer
    x = 252,072.98

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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.