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Finding the Fourth Proportional to 212,886.64, 293,785.56 and 117,396.76

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Solution

The fourth proportional to 212,886.64, 293,785.56 and 117,396.76 is: 162,008.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,886.64 : 293,785.56 = 117,396.76 : x
  2. Step 2: Convert to fraction form
    212,886.64/293,785.56 = 117,396.76/x
  3. Step 3: Cross multiply
    212,886.64x = 293,785.56 × 117,396.76
  4. Step 4: Simplify right side
    212,886.64x = 34,489,472,878.79
  5. Step 5: Solve for x
    x = 34,489,472,878.79/212,886.64
  6. Step 6: Final answer
    x = 162,008.63

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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.