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Finding the Fourth Proportional to 356,909.20, 492,535.40 and 195,765.56

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Solution

The fourth proportional to 356,909.20, 492,535.40 and 195,765.56 is: 270,156.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,909.20 : 492,535.40 = 195,765.56 : x
  2. Step 2: Convert to fraction form
    356,909.20/492,535.40 = 195,765.56/x
  3. Step 3: Cross multiply
    356,909.20x = 492,535.40 × 195,765.56
  4. Step 4: Simplify right side
    356,909.20x = 96,421,468,400.82
  5. Step 5: Solve for x
    x = 96,421,468,400.82/356,909.20
  6. Step 6: Final answer
    x = 270,156.86

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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.