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Finding the Fourth Proportional to 213,157.28, 319,799.52 and 63,402.56

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Solution

The fourth proportional to 213,157.28, 319,799.52 and 63,402.56 is: 95,122.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,157.28 : 319,799.52 = 63,402.56 : x
  2. Step 2: Convert to fraction form
    213,157.28/319,799.52 = 63,402.56/x
  3. Step 3: Cross multiply
    213,157.28x = 319,799.52 × 63,402.56
  4. Step 4: Simplify right side
    213,157.28x = 20,276,108,254.77
  5. Step 5: Solve for x
    x = 20,276,108,254.77/213,157.28
  6. Step 6: Final answer
    x = 95,122.76

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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.