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Finding the Fourth Proportional to 547,404.34, 755,374.44 and 305,672.48

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Solution

The fourth proportional to 547,404.34, 755,374.44 and 305,672.48 is: 421,803.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,404.34 : 755,374.44 = 305,672.48 : x
  2. Step 2: Convert to fraction form
    547,404.34/755,374.44 = 305,672.48/x
  3. Step 3: Cross multiply
    547,404.34x = 755,374.44 × 305,672.48
  4. Step 4: Simplify right side
    547,404.34x = 230,897,178,403.41
  5. Step 5: Solve for x
    x = 230,897,178,403.41/547,404.34
  6. Step 6: Final answer
    x = 421,803.70

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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.