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Finding the Fourth Proportional to 200,030.80, 300,046.20 and 81,624.40

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Solution

The fourth proportional to 200,030.80, 300,046.20 and 81,624.40 is: 122,436.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,030.80 : 300,046.20 = 81,624.40 : x
  2. Step 2: Convert to fraction form
    200,030.80/300,046.20 = 81,624.40/x
  3. Step 3: Cross multiply
    200,030.80x = 300,046.20 × 81,624.40
  4. Step 4: Simplify right side
    200,030.80x = 24,491,091,047.28
  5. Step 5: Solve for x
    x = 24,491,091,047.28/200,030.80
  6. Step 6: Final answer
    x = 122,436.60

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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.