Home / 208,217.78-287,337.10-112,723.70

Finding the Fourth Proportional to 208,217.78, 287,337.10 and 112,723.70

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Solution

The fourth proportional to 208,217.78, 287,337.10 and 112,723.70 is: 155,556.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,217.78 : 287,337.10 = 112,723.70 : x
  2. Step 2: Convert to fraction form
    208,217.78/287,337.10 = 112,723.70/x
  3. Step 3: Cross multiply
    208,217.78x = 287,337.10 × 112,723.70
  4. Step 4: Simplify right side
    208,217.78x = 32,389,699,340.78
  5. Step 5: Solve for x
    x = 32,389,699,340.78/208,217.78
  6. Step 6: Final answer
    x = 155,556.84

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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.