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Finding the Fourth Proportional to 347,718.80, 521,578.20 and 268,986.80

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Solution

The fourth proportional to 347,718.80, 521,578.20 and 268,986.80 is: 403,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,718.80 : 521,578.20 = 268,986.80 : x
  2. Step 2: Convert to fraction form
    347,718.80/521,578.20 = 268,986.80/x
  3. Step 3: Cross multiply
    347,718.80x = 521,578.20 × 268,986.80
  4. Step 4: Simplify right side
    347,718.80x = 140,297,650,967.76
  5. Step 5: Solve for x
    x = 140,297,650,967.76/347,718.80
  6. Step 6: Final answer
    x = 403,480.20

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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.