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Finding the Fourth Proportional to 213,251.44, 319,877.58 and 55,479.64

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Solution

The fourth proportional to 213,251.44, 319,877.58 and 55,479.64 is: 83,219.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,251.44 : 319,877.58 = 55,479.64 : x
  2. Step 2: Convert to fraction form
    213,251.44/319,877.58 = 55,479.64/x
  3. Step 3: Cross multiply
    213,251.44x = 319,877.58 × 55,479.64
  4. Step 4: Simplify right side
    213,251.44x = 17,746,692,982.47
  5. Step 5: Solve for x
    x = 17,746,692,982.47/213,251.44
  6. Step 6: Final answer
    x = 83,219.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.