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Finding the Fourth Proportional to 612,609.28, 918,931.20 and 169,377.28

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Solution

The fourth proportional to 612,609.28, 918,931.20 and 169,377.28 is: 254,070.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,609.28 : 918,931.20 = 169,377.28 : x
  2. Step 2: Convert to fraction form
    612,609.28/918,931.20 = 169,377.28/x
  3. Step 3: Cross multiply
    612,609.28x = 918,931.20 × 169,377.28
  4. Step 4: Simplify right side
    612,609.28x = 155,646,067,163.14
  5. Step 5: Solve for x
    x = 155,646,067,163.14/612,609.28
  6. Step 6: Final answer
    x = 254,070.70

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1.5x scale

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.