Home / 208,813.75-288,163.18-113,320.47

Finding the Fourth Proportional to 208,813.75, 288,163.18 and 113,320.47

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Solution

The fourth proportional to 208,813.75, 288,163.18 and 113,320.47 is: 156,382.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,813.75 : 288,163.18 = 113,320.47 : x
  2. Step 2: Convert to fraction form
    208,813.75/288,163.18 = 113,320.47/x
  3. Step 3: Cross multiply
    208,813.75x = 288,163.18 × 113,320.47
  4. Step 4: Simplify right side
    208,813.75x = 32,654,786,994.29
  5. Step 5: Solve for x
    x = 32,654,786,994.29/208,813.75
  6. Step 6: Final answer
    x = 156,382.36

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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.