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Finding the Fourth Proportional to 547,385.04, 755,384.22 and 305,671.86

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Solution

The fourth proportional to 547,385.04, 755,384.22 and 305,671.86 is: 421,823.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,385.04 : 755,384.22 = 305,671.86 : x
  2. Step 2: Convert to fraction form
    547,385.04/755,384.22 = 305,671.86/x
  3. Step 3: Cross multiply
    547,385.04x = 755,384.22 × 305,671.86
  4. Step 4: Simplify right side
    547,385.04x = 230,899,699,542.05
  5. Step 5: Solve for x
    x = 230,899,699,542.05/547,385.04
  6. Step 6: Final answer
    x = 421,823.18

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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.