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Finding the Fourth Proportional to 320,963.60, 480,984.60 and 236,061.20

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Solution

The fourth proportional to 320,963.60, 480,984.60 and 236,061.20 is: 353,752.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,963.60 : 480,984.60 = 236,061.20 : x
  2. Step 2: Convert to fraction form
    320,963.60/480,984.60 = 236,061.20/x
  3. Step 3: Cross multiply
    320,963.60x = 480,984.60 × 236,061.20
  4. Step 4: Simplify right side
    320,963.60x = 113,541,801,857.52
  5. Step 5: Solve for x
    x = 113,541,801,857.52/320,963.60
  6. Step 6: Final answer
    x = 353,752.89

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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.