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Finding the Fourth Proportional to 345,953.12, 518,945.12 and 106,049.76

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Solution

The fourth proportional to 345,953.12, 518,945.12 and 106,049.76 is: 159,079.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,953.12 : 518,945.12 = 106,049.76 : x
  2. Step 2: Convert to fraction form
    345,953.12/518,945.12 = 106,049.76/x
  3. Step 3: Cross multiply
    345,953.12x = 518,945.12 × 106,049.76
  4. Step 4: Simplify right side
    345,953.12x = 55,034,005,429.17
  5. Step 5: Solve for x
    x = 55,034,005,429.17/345,953.12
  6. Step 6: Final answer
    x = 159,079.37

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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.