Home / 208,238.28-287,090.91-156,335.64

Finding the Fourth Proportional to 208,238.28, 287,090.91 and 156,335.64

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Solution

The fourth proportional to 208,238.28, 287,090.91 and 156,335.64 is: 215,534.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,238.28 : 287,090.91 = 156,335.64 : x
  2. Step 2: Convert to fraction form
    208,238.28/287,090.91 = 156,335.64/x
  3. Step 3: Cross multiply
    208,238.28x = 287,090.91 × 156,335.64
  4. Step 4: Simplify right side
    208,238.28x = 44,882,542,059.08
  5. Step 5: Solve for x
    x = 44,882,542,059.08/208,238.28
  6. Step 6: Final answer
    x = 215,534.54

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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.