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Finding the Fourth Proportional to 547,278.32, 755,259.16 and 305,551.60

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Solution

The fourth proportional to 547,278.32, 755,259.16 and 305,551.60 is: 421,669.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,278.32 : 755,259.16 = 305,551.60 : x
  2. Step 2: Convert to fraction form
    547,278.32/755,259.16 = 305,551.60/x
  3. Step 3: Cross multiply
    547,278.32x = 755,259.16 × 305,551.60
  4. Step 4: Simplify right side
    547,278.32x = 230,770,644,752.66
  5. Step 5: Solve for x
    x = 230,770,644,752.66/547,278.32
  6. Step 6: Final answer
    x = 421,669.63

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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.