Home / 208,285.78-287,432.13-117,641.92

Finding the Fourth Proportional to 208,285.78, 287,432.13 and 117,641.92

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Solution

The fourth proportional to 208,285.78, 287,432.13 and 117,641.92 is: 162,344.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,285.78 : 287,432.13 = 117,641.92 : x
  2. Step 2: Convert to fraction form
    208,285.78/287,432.13 = 117,641.92/x
  3. Step 3: Cross multiply
    208,285.78x = 287,432.13 × 117,641.92
  4. Step 4: Simplify right side
    208,285.78x = 33,814,067,642.89
  5. Step 5: Solve for x
    x = 33,814,067,642.89/208,285.78
  6. Step 6: Final answer
    x = 162,344.58

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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.