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Finding the Fourth Proportional to 347,840.10, 521,760.15 and 263,859.30

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Solution

The fourth proportional to 347,840.10, 521,760.15 and 263,859.30 is: 395,788.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,840.10 : 521,760.15 = 263,859.30 : x
  2. Step 2: Convert to fraction form
    347,840.10/521,760.15 = 263,859.30/x
  3. Step 3: Cross multiply
    347,840.10x = 521,760.15 × 263,859.30
  4. Step 4: Simplify right side
    347,840.10x = 137,671,267,946.90
  5. Step 5: Solve for x
    x = 137,671,267,946.90/347,840.10
  6. Step 6: Final answer
    x = 395,788.95

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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.