Home / 208,271.54-287,416.10-112,778.24

Finding the Fourth Proportional to 208,271.54, 287,416.10 and 112,778.24

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Solution

The fourth proportional to 208,271.54, 287,416.10 and 112,778.24 is: 155,634.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,271.54 : 287,416.10 = 112,778.24 : x
  2. Step 2: Convert to fraction form
    208,271.54/287,416.10 = 112,778.24/x
  3. Step 3: Cross multiply
    208,271.54x = 287,416.10 × 112,778.24
  4. Step 4: Simplify right side
    208,271.54x = 32,414,280,750.53
  5. Step 5: Solve for x
    x = 32,414,280,750.53/208,271.54
  6. Step 6: Final answer
    x = 155,634.71

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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.