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Finding the Fourth Proportional to 547,444.23, 755,363.45 and 305,689.61

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Solution

The fourth proportional to 547,444.23, 755,363.45 and 305,689.61 is: 421,790.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,444.23 : 755,363.45 = 305,689.61 : x
  2. Step 2: Convert to fraction form
    547,444.23/755,363.45 = 305,689.61/x
  3. Step 3: Cross multiply
    547,444.23x = 755,363.45 × 305,689.61
  4. Step 4: Simplify right side
    547,444.23x = 230,906,753,133.49
  5. Step 5: Solve for x
    x = 230,906,753,133.49/547,444.23
  6. Step 6: Final answer
    x = 421,790.46

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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.