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Finding the Fourth Proportional to 201,700.90, 278,347.24 and 112,276.90

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Solution

The fourth proportional to 201,700.90, 278,347.24 and 112,276.90 is: 154,942.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,700.90 : 278,347.24 = 112,276.90 : x
  2. Step 2: Convert to fraction form
    201,700.90/278,347.24 = 112,276.90/x
  3. Step 3: Cross multiply
    201,700.90x = 278,347.24 × 112,276.90
  4. Step 4: Simplify right side
    201,700.90x = 31,251,965,230.76
  5. Step 5: Solve for x
    x = 31,251,965,230.76/201,700.90
  6. Step 6: Final answer
    x = 154,942.12

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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.