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Finding the Fourth Proportional to 467,472.60, 644,886.60 and 306,256.68

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Solution

The fourth proportional to 467,472.60, 644,886.60 and 306,256.68 is: 422,486.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,472.60 : 644,886.60 = 306,256.68 : x
  2. Step 2: Convert to fraction form
    467,472.60/644,886.60 = 306,256.68/x
  3. Step 3: Cross multiply
    467,472.60x = 644,886.60 × 306,256.68
  4. Step 4: Simplify right side
    467,472.60x = 197,500,829,092.49
  5. Step 5: Solve for x
    x = 197,500,829,092.49/467,472.60
  6. Step 6: Final answer
    x = 422,486.43

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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.