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Finding the Fourth Proportional to 547,270.78, 755,226.32 and 305,557.06

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Solution

The fourth proportional to 547,270.78, 755,226.32 and 305,557.06 is: 421,664.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,270.78 : 755,226.32 = 305,557.06 : x
  2. Step 2: Convert to fraction form
    547,270.78/755,226.32 = 305,557.06/x
  3. Step 3: Cross multiply
    547,270.78x = 755,226.32 × 305,557.06
  4. Step 4: Simplify right side
    547,270.78x = 230,764,733,973.82
  5. Step 5: Solve for x
    x = 230,764,733,973.82/547,270.78
  6. Step 6: Final answer
    x = 421,664.64

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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.