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Finding the Fourth Proportional to 213,126.57, 319,742.47 and 63,366.21

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Solution

The fourth proportional to 213,126.57, 319,742.47 and 63,366.21 is: 95,064.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,126.57 : 319,742.47 = 63,366.21 : x
  2. Step 2: Convert to fraction form
    213,126.57/319,742.47 = 63,366.21/x
  3. Step 3: Cross multiply
    213,126.57x = 319,742.47 × 63,366.21
  4. Step 4: Simplify right side
    213,126.57x = 20,260,868,499.94
  5. Step 5: Solve for x
    x = 20,260,868,499.94/213,126.57
  6. Step 6: Final answer
    x = 95,064.96

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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.