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Finding the Fourth Proportional to 291,032.48, 436,505.52 and 80,648.48

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Solution

The fourth proportional to 291,032.48, 436,505.52 and 80,648.48 is: 120,960.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,032.48 : 436,505.52 = 80,648.48 : x
  2. Step 2: Convert to fraction form
    291,032.48/436,505.52 = 80,648.48/x
  3. Step 3: Cross multiply
    291,032.48x = 436,505.52 × 80,648.48
  4. Step 4: Simplify right side
    291,032.48x = 35,203,506,699.61
  5. Step 5: Solve for x
    x = 35,203,506,699.61/291,032.48
  6. Step 6: Final answer
    x = 120,960.75

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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.