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Finding the Fourth Proportional to 612,314.28, 918,488.70 and 169,082.28

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Solution

The fourth proportional to 612,314.28, 918,488.70 and 169,082.28 is: 253,628.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,314.28 : 918,488.70 = 169,082.28 : x
  2. Step 2: Convert to fraction form
    612,314.28/918,488.70 = 169,082.28/x
  3. Step 3: Cross multiply
    612,314.28x = 918,488.70 × 169,082.28
  4. Step 4: Simplify right side
    612,314.28x = 155,300,163,550.24
  5. Step 5: Solve for x
    x = 155,300,163,550.24/612,314.28
  6. Step 6: Final answer
    x = 253,628.19

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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.