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Finding the Fourth Proportional to 207,308.88, 286,129.08 and 135,555.60

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Solution

The fourth proportional to 207,308.88, 286,129.08 and 135,555.60 is: 187,094.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,308.88 : 286,129.08 = 135,555.60 : x
  2. Step 2: Convert to fraction form
    207,308.88/286,129.08 = 135,555.60/x
  3. Step 3: Cross multiply
    207,308.88x = 286,129.08 × 135,555.60
  4. Step 4: Simplify right side
    207,308.88x = 38,786,399,116.85
  5. Step 5: Solve for x
    x = 38,786,399,116.85/207,308.88
  6. Step 6: Final answer
    x = 187,094.73

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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.