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Finding the Fourth Proportional to 207,888.35, 286,885.90 and 112,395.05

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Solution

The fourth proportional to 207,888.35, 286,885.90 and 112,395.05 is: 155,105.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,888.35 : 286,885.90 = 112,395.05 : x
  2. Step 2: Convert to fraction form
    207,888.35/286,885.90 = 112,395.05/x
  3. Step 3: Cross multiply
    207,888.35x = 286,885.90 × 112,395.05
  4. Step 4: Simplify right side
    207,888.35x = 32,244,555,074.80
  5. Step 5: Solve for x
    x = 32,244,555,074.80/207,888.35
  6. Step 6: Final answer
    x = 155,105.16

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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.