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Finding the Fourth Proportional to 212,987.57, 293,921.20 and 117,498.29

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Solution

The fourth proportional to 212,987.57, 293,921.20 and 117,498.29 is: 162,146.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,987.57 : 293,921.20 = 117,498.29 : x
  2. Step 2: Convert to fraction form
    212,987.57/293,921.20 = 117,498.29/x
  3. Step 3: Cross multiply
    212,987.57x = 293,921.20 × 117,498.29
  4. Step 4: Simplify right side
    212,987.57x = 34,535,238,394.75
  5. Step 5: Solve for x
    x = 34,535,238,394.75/212,987.57
  6. Step 6: Final answer
    x = 162,146.73

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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.