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Finding the Fourth Proportional to 612,267.28, 918,399.64 and 169,034

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Solution

The fourth proportional to 612,267.28, 918,399.64 and 169,034 is: 253,550.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,267.28 : 918,399.64 = 169,034 : x
  2. Step 2: Convert to fraction form
    612,267.28/918,399.64 = 169,034/x
  3. Step 3: Cross multiply
    612,267.28x = 918,399.64 × 169,034
  4. Step 4: Simplify right side
    612,267.28x = 155,240,764,747.76
  5. Step 5: Solve for x
    x = 155,240,764,747.76/612,267.28
  6. Step 6: Final answer
    x = 253,550.65

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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.