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Finding the Fourth Proportional to 547,664.40, 755,749.76 and 305,898.80

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Solution

The fourth proportional to 547,664.40, 755,749.76 and 305,898.80 is: 422,125.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,664.40 : 755,749.76 = 305,898.80 : x
  2. Step 2: Convert to fraction form
    547,664.40/755,749.76 = 305,898.80/x
  3. Step 3: Cross multiply
    547,664.40x = 755,749.76 × 305,898.80
  4. Step 4: Simplify right side
    547,664.40x = 231,182,944,684.29
  5. Step 5: Solve for x
    x = 231,182,944,684.29/547,664.40
  6. Step 6: Final answer
    x = 422,125.20

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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.