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Finding the Fourth Proportional to 275,870.88, 380,736.99 and 168,417.90

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Solution

The fourth proportional to 275,870.88, 380,736.99 and 168,417.90 is: 232,438.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,870.88 : 380,736.99 = 168,417.90 : x
  2. Step 2: Convert to fraction form
    275,870.88/380,736.99 = 168,417.90/x
  3. Step 3: Cross multiply
    275,870.88x = 380,736.99 × 168,417.90
  4. Step 4: Simplify right side
    275,870.88x = 64,122,924,308.12
  5. Step 5: Solve for x
    x = 64,122,924,308.12/275,870.88
  6. Step 6: Final answer
    x = 232,438.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.