Home / 287,440.20-431,160.30-274,537.80

Finding the Fourth Proportional to 287,440.20, 431,160.30 and 274,537.80

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Solution

The fourth proportional to 287,440.20, 431,160.30 and 274,537.80 is: 411,806.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,440.20 : 431,160.30 = 274,537.80 : x
  2. Step 2: Convert to fraction form
    287,440.20/431,160.30 = 274,537.80/x
  3. Step 3: Cross multiply
    287,440.20x = 431,160.30 × 274,537.80
  4. Step 4: Simplify right side
    287,440.20x = 118,369,800,209.34
  5. Step 5: Solve for x
    x = 118,369,800,209.34/287,440.20
  6. Step 6: Final answer
    x = 411,806.70

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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.