Home / 208,215.75-287,339.22-112,722.69

Finding the Fourth Proportional to 208,215.75, 287,339.22 and 112,722.69

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Solution

The fourth proportional to 208,215.75, 287,339.22 and 112,722.69 is: 155,558.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,215.75 : 287,339.22 = 112,722.69 : x
  2. Step 2: Convert to fraction form
    208,215.75/287,339.22 = 112,722.69/x
  3. Step 3: Cross multiply
    208,215.75x = 287,339.22 × 112,722.69
  4. Step 4: Simplify right side
    208,215.75x = 32,389,649,820.90
  5. Step 5: Solve for x
    x = 32,389,649,820.90/208,215.75
  6. Step 6: Final answer
    x = 155,558.12

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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.