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Finding the Fourth Proportional to 355,304.80, 533,248.80 and 343,640.80

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Solution

The fourth proportional to 355,304.80, 533,248.80 and 343,640.80 is: 515,743.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,304.80 : 533,248.80 = 343,640.80 : x
  2. Step 2: Convert to fraction form
    355,304.80/533,248.80 = 343,640.80/x
  3. Step 3: Cross multiply
    355,304.80x = 533,248.80 × 343,640.80
  4. Step 4: Simplify right side
    355,304.80x = 183,246,044,231.04
  5. Step 5: Solve for x
    x = 183,246,044,231.04/355,304.80
  6. Step 6: Final answer
    x = 515,743.23

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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.