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Finding the Fourth Proportional to 172,805.40, 259,208.10 and 166,244.40

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Solution

The fourth proportional to 172,805.40, 259,208.10 and 166,244.40 is: 249,366.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,805.40 : 259,208.10 = 166,244.40 : x
  2. Step 2: Convert to fraction form
    172,805.40/259,208.10 = 166,244.40/x
  3. Step 3: Cross multiply
    172,805.40x = 259,208.10 × 166,244.40
  4. Step 4: Simplify right side
    172,805.40x = 43,091,895,059.64
  5. Step 5: Solve for x
    x = 43,091,895,059.64/172,805.40
  6. Step 6: Final answer
    x = 249,366.60

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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.