Home / 345,694.50-518,071.55-203,605.11

Finding the Fourth Proportional to 345,694.50, 518,071.55 and 203,605.11

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Solution

The fourth proportional to 345,694.50, 518,071.55 and 203,605.11 is: 305,130.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,694.50 : 518,071.55 = 203,605.11 : x
  2. Step 2: Convert to fraction form
    345,694.50/518,071.55 = 203,605.11/x
  3. Step 3: Cross multiply
    345,694.50x = 518,071.55 × 203,605.11
  4. Step 4: Simplify right side
    345,694.50x = 105,482,013,907.60
  5. Step 5: Solve for x
    x = 105,482,013,907.60/345,694.50
  6. Step 6: Final answer
    x = 305,130.73

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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.