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Finding the Fourth Proportional to 478,257.05, 660,024.57 and 263,397.06

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Solution

The fourth proportional to 478,257.05, 660,024.57 and 263,397.06 is: 363,504.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,257.05 : 660,024.57 = 263,397.06 : x
  2. Step 2: Convert to fraction form
    478,257.05/660,024.57 = 263,397.06/x
  3. Step 3: Cross multiply
    478,257.05x = 660,024.57 × 263,397.06
  4. Step 4: Simplify right side
    478,257.05x = 173,848,529,948.78
  5. Step 5: Solve for x
    x = 173,848,529,948.78/478,257.05
  6. Step 6: Final answer
    x = 363,504.37

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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.