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Finding the Fourth Proportional to 395,711.70, 593,567.55 and 143,113.20

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Solution

The fourth proportional to 395,711.70, 593,567.55 and 143,113.20 is: 214,669.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,711.70 : 593,567.55 = 143,113.20 : x
  2. Step 2: Convert to fraction form
    395,711.70/593,567.55 = 143,113.20/x
  3. Step 3: Cross multiply
    395,711.70x = 593,567.55 × 143,113.20
  4. Step 4: Simplify right side
    395,711.70x = 84,947,351,496.66
  5. Step 5: Solve for x
    x = 84,947,351,496.66/395,711.70
  6. Step 6: Final answer
    x = 214,669.80

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Similar ratio
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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.