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Finding the Fourth Proportional to 612,065.80, 918,098.70 and 162,785.80

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Solution

The fourth proportional to 612,065.80, 918,098.70 and 162,785.80 is: 244,178.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,065.80 : 918,098.70 = 162,785.80 : x
  2. Step 2: Convert to fraction form
    612,065.80/918,098.70 = 162,785.80/x
  3. Step 3: Cross multiply
    612,065.80x = 918,098.70 × 162,785.80
  4. Step 4: Simplify right side
    612,065.80x = 149,453,431,358.46
  5. Step 5: Solve for x
    x = 149,453,431,358.46/612,065.80
  6. Step 6: Final answer
    x = 244,178.70

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Similar ratio
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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.