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Finding the Fourth Proportional to 207,887.40, 286,884.84 and 112,394.10

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Solution

The fourth proportional to 207,887.40, 286,884.84 and 112,394.10 is: 155,103.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,887.40 : 286,884.84 = 112,394.10 : x
  2. Step 2: Convert to fraction form
    207,887.40/286,884.84 = 112,394.10/x
  3. Step 3: Cross multiply
    207,887.40x = 286,884.84 × 112,394.10
  4. Step 4: Simplify right side
    207,887.40x = 32,244,163,395.44
  5. Step 5: Solve for x
    x = 32,244,163,395.44/207,887.40
  6. Step 6: Final answer
    x = 155,103.98

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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.