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Finding the Fourth Proportional to 345,841.60, 518,859.60 and 168,354.40

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Solution

The fourth proportional to 345,841.60, 518,859.60 and 168,354.40 is: 252,578.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,841.60 : 518,859.60 = 168,354.40 : x
  2. Step 2: Convert to fraction form
    345,841.60/518,859.60 = 168,354.40/x
  3. Step 3: Cross multiply
    345,841.60x = 518,859.60 × 168,354.40
  4. Step 4: Simplify right side
    345,841.60x = 87,352,296,642.24
  5. Step 5: Solve for x
    x = 87,352,296,642.24/345,841.60
  6. Step 6: Final answer
    x = 252,578.92

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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.