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Finding the Fourth Proportional to 201,651.50, 278,279.08 and 112,248.62

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Solution

The fourth proportional to 201,651.50, 278,279.08 and 112,248.62 is: 154,903.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,651.50 : 278,279.08 = 112,248.62 : x
  2. Step 2: Convert to fraction form
    201,651.50/278,279.08 = 112,248.62/x
  3. Step 3: Cross multiply
    201,651.50x = 278,279.08 × 112,248.62
  4. Step 4: Simplify right side
    201,651.50x = 31,236,442,704.87
  5. Step 5: Solve for x
    x = 31,236,442,704.87/201,651.50
  6. Step 6: Final answer
    x = 154,903.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.