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Finding the Fourth Proportional to 291,166.72, 435,973.20 and 171,124.48

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Solution

The fourth proportional to 291,166.72, 435,973.20 and 171,124.48 is: 256,230.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,166.72 : 435,973.20 = 171,124.48 : x
  2. Step 2: Convert to fraction form
    291,166.72/435,973.20 = 171,124.48/x
  3. Step 3: Cross multiply
    291,166.72x = 435,973.20 × 171,124.48
  4. Step 4: Simplify right side
    291,166.72x = 74,605,687,143.94
  5. Step 5: Solve for x
    x = 74,605,687,143.94/291,166.72
  6. Step 6: Final answer
    x = 256,230.13

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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.