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Finding the Fourth Proportional to 291,252.80, 436,004.40 and 172,863.20

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Solution

The fourth proportional to 291,252.80, 436,004.40 and 172,863.20 is: 258,775.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,252.80 : 436,004.40 = 172,863.20 : x
  2. Step 2: Convert to fraction form
    291,252.80/436,004.40 = 172,863.20/x
  3. Step 3: Cross multiply
    291,252.80x = 436,004.40 × 172,863.20
  4. Step 4: Simplify right side
    291,252.80x = 75,369,115,798.08
  5. Step 5: Solve for x
    x = 75,369,115,798.08/291,252.80
  6. Step 6: Final answer
    x = 258,775.59

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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.