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Finding the Fourth Proportional to 346,057.30, 518,101.80 and 266,669.20

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Solution

The fourth proportional to 346,057.30, 518,101.80 and 266,669.20 is: 399,245.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,057.30 : 518,101.80 = 266,669.20 : x
  2. Step 2: Convert to fraction form
    346,057.30/518,101.80 = 266,669.20/x
  3. Step 3: Cross multiply
    346,057.30x = 518,101.80 × 266,669.20
  4. Step 4: Simplify right side
    346,057.30x = 138,161,792,524.56
  5. Step 5: Solve for x
    x = 138,161,792,524.56/346,057.30
  6. Step 6: Final answer
    x = 399,245.42

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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.