Home / 287,861.76-397,320.46-196,132.77

Finding the Fourth Proportional to 287,861.76, 397,320.46 and 196,132.77

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Solution

The fourth proportional to 287,861.76, 397,320.46 and 196,132.77 is: 270,711.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,861.76 : 397,320.46 = 196,132.77 : x
  2. Step 2: Convert to fraction form
    287,861.76/397,320.46 = 196,132.77/x
  3. Step 3: Cross multiply
    287,861.76x = 397,320.46 × 196,132.77
  4. Step 4: Simplify right side
    287,861.76x = 77,927,561,907.14
  5. Step 5: Solve for x
    x = 77,927,561,907.14/287,861.76
  6. Step 6: Final answer
    x = 270,711.75

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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.