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Finding the Fourth Proportional to 207,888.71, 286,886.34 and 112,395.38

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Solution

The fourth proportional to 207,888.71, 286,886.34 and 112,395.38 is: 155,105.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,888.71 : 286,886.34 = 112,395.38 : x
  2. Step 2: Convert to fraction form
    207,888.71/286,886.34 = 112,395.38/x
  3. Step 3: Cross multiply
    207,888.71x = 286,886.34 × 112,395.38
  4. Step 4: Simplify right side
    207,888.71x = 32,244,697,766.68
  5. Step 5: Solve for x
    x = 32,244,697,766.68/207,888.71
  6. Step 6: Final answer
    x = 155,105.58

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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.