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Finding the Fourth Proportional to 320,529.60, 481,312.80 and 232,401.60

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Solution

The fourth proportional to 320,529.60, 481,312.80 and 232,401.60 is: 348,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,529.60 : 481,312.80 = 232,401.60 : x
  2. Step 2: Convert to fraction form
    320,529.60/481,312.80 = 232,401.60/x
  3. Step 3: Cross multiply
    320,529.60x = 481,312.80 × 232,401.60
  4. Step 4: Simplify right side
    320,529.60x = 111,857,864,820.48
  5. Step 5: Solve for x
    x = 111,857,864,820.48/320,529.60
  6. Step 6: Final answer
    x = 348,978.27

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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.