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Finding the Fourth Proportional to 347,442.72, 479,244.24 and 219,985.44

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Solution

The fourth proportional to 347,442.72, 479,244.24 and 219,985.44 is: 303,436.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,442.72 : 479,244.24 = 219,985.44 : x
  2. Step 2: Convert to fraction form
    347,442.72/479,244.24 = 219,985.44/x
  3. Step 3: Cross multiply
    347,442.72x = 479,244.24 × 219,985.44
  4. Step 4: Simplify right side
    347,442.72x = 105,426,755,003.87
  5. Step 5: Solve for x
    x = 105,426,755,003.87/347,442.72
  6. Step 6: Final answer
    x = 303,436.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.