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Finding the Fourth Proportional to 340,328.80, 510,512.40 and 103,679.20

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Solution

The fourth proportional to 340,328.80, 510,512.40 and 103,679.20 is: 155,524.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,328.80 : 510,512.40 = 103,679.20 : x
  2. Step 2: Convert to fraction form
    340,328.80/510,512.40 = 103,679.20/x
  3. Step 3: Cross multiply
    340,328.80x = 510,512.40 × 103,679.20
  4. Step 4: Simplify right side
    340,328.80x = 52,929,517,222.08
  5. Step 5: Solve for x
    x = 52,929,517,222.08/340,328.80
  6. Step 6: Final answer
    x = 155,524.65

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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.