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Finding the Fourth Proportional to 345,869.60, 518,820.60 and 109,230.80

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Solution

The fourth proportional to 345,869.60, 518,820.60 and 109,230.80 is: 163,851.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,869.60 : 518,820.60 = 109,230.80 : x
  2. Step 2: Convert to fraction form
    345,869.60/518,820.60 = 109,230.80/x
  3. Step 3: Cross multiply
    345,869.60x = 518,820.60 × 109,230.80
  4. Step 4: Simplify right side
    345,869.60x = 56,671,189,194.48
  5. Step 5: Solve for x
    x = 56,671,189,194.48/345,869.60
  6. Step 6: Final answer
    x = 163,851.32

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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.