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Finding the Fourth Proportional to 408,381.42, 612,601.32 and 108,860.46

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Solution

The fourth proportional to 408,381.42, 612,601.32 and 108,860.46 is: 163,298.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,381.42 : 612,601.32 = 108,860.46 : x
  2. Step 2: Convert to fraction form
    408,381.42/612,601.32 = 108,860.46/x
  3. Step 3: Cross multiply
    408,381.42x = 612,601.32 × 108,860.46
  4. Step 4: Simplify right side
    408,381.42x = 66,688,061,491.81
  5. Step 5: Solve for x
    x = 66,688,061,491.81/408,381.42
  6. Step 6: Final answer
    x = 163,298.47

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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.