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Finding the Fourth Proportional to 478,548.33, 660,426.11 and 263,688.34

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Solution

The fourth proportional to 478,548.33, 660,426.11 and 263,688.34 is: 363,906.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,548.33 : 660,426.11 = 263,688.34 : x
  2. Step 2: Convert to fraction form
    478,548.33/660,426.11 = 263,688.34/x
  3. Step 3: Cross multiply
    478,548.33x = 660,426.11 × 263,688.34
  4. Step 4: Simplify right side
    478,548.33x = 174,146,664,638.56
  5. Step 5: Solve for x
    x = 174,146,664,638.56/478,548.33
  6. Step 6: Final answer
    x = 363,906.12

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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.