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Finding the Fourth Proportional to 208,419.67, 287,617.26 and 112,926.07

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Solution

The fourth proportional to 208,419.67, 287,617.26 and 112,926.07 is: 155,836.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,419.67 : 287,617.26 = 112,926.07 : x
  2. Step 2: Convert to fraction form
    208,419.67/287,617.26 = 112,926.07/x
  3. Step 3: Cross multiply
    208,419.67x = 287,617.26 × 112,926.07
  4. Step 4: Simplify right side
    208,419.67x = 32,479,486,835.97
  5. Step 5: Solve for x
    x = 32,479,486,835.97/208,419.67
  6. Step 6: Final answer
    x = 155,836.96

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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.