Home / 278,006.64-383,645.00-157,143.68

Finding the Fourth Proportional to 278,006.64, 383,645.00 and 157,143.68

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Solution

The fourth proportional to 278,006.64, 383,645.00 and 157,143.68 is: 216,855.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,006.64 : 383,645.00 = 157,143.68 : x
  2. Step 2: Convert to fraction form
    278,006.64/383,645.00 = 157,143.68/x
  3. Step 3: Cross multiply
    278,006.64x = 383,645.00 × 157,143.68
  4. Step 4: Simplify right side
    278,006.64x = 60,287,384,409.66
  5. Step 5: Solve for x
    x = 60,287,384,409.66/278,006.64
  6. Step 6: Final answer
    x = 216,855.92

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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.