Home / 345,338.23-518,077.67-145,659.36

Finding the Fourth Proportional to 345,338.23, 518,077.67 and 145,659.36

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Solution

The fourth proportional to 345,338.23, 518,077.67 and 145,659.36 is: 218,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,338.23 : 518,077.67 = 145,659.36 : x
  2. Step 2: Convert to fraction form
    345,338.23/518,077.67 = 145,659.36/x
  3. Step 3: Cross multiply
    345,338.23x = 518,077.67 × 145,659.36
  4. Step 4: Simplify right side
    345,338.23x = 75,462,861,842.49
  5. Step 5: Solve for x
    x = 75,462,861,842.49/345,338.23
  6. Step 6: Final answer
    x = 218,518.70

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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.