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Finding the Fourth Proportional to 177,310.40, 265,965.60 and 172,389.65

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Solution

The fourth proportional to 177,310.40, 265,965.60 and 172,389.65 is: 258,584.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,310.40 : 265,965.60 = 172,389.65 : x
  2. Step 2: Convert to fraction form
    177,310.40/265,965.60 = 172,389.65/x
  3. Step 3: Cross multiply
    177,310.40x = 265,965.60 × 172,389.65
  4. Step 4: Simplify right side
    177,310.40x = 45,849,716,696.04
  5. Step 5: Solve for x
    x = 45,849,716,696.04/177,310.40
  6. Step 6: Final answer
    x = 258,584.48

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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.