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Finding the Fourth Proportional to 291,061.76, 436,656.48 and 261,668.48

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Solution

The fourth proportional to 291,061.76, 436,656.48 and 261,668.48 is: 392,560.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,061.76 : 436,656.48 = 261,668.48 : x
  2. Step 2: Convert to fraction form
    291,061.76/436,656.48 = 261,668.48/x
  3. Step 3: Cross multiply
    291,061.76x = 436,656.48 × 261,668.48
  4. Step 4: Simplify right side
    291,061.76x = 114,259,237,403.75
  5. Step 5: Solve for x
    x = 114,259,237,403.75/291,061.76
  6. Step 6: Final answer
    x = 392,560.11

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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.