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Finding the Fourth Proportional to 612,231.44, 918,414.12 and 207,715.71

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Solution

The fourth proportional to 612,231.44, 918,414.12 and 207,715.71 is: 311,596.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,231.44 : 918,414.12 = 207,715.71 : x
  2. Step 2: Convert to fraction form
    612,231.44/918,414.12 = 207,715.71/x
  3. Step 3: Cross multiply
    612,231.44x = 918,414.12 × 207,715.71
  4. Step 4: Simplify right side
    612,231.44x = 190,769,041,009.83
  5. Step 5: Solve for x
    x = 190,769,041,009.83/612,231.44
  6. Step 6: Final answer
    x = 311,596.29

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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.