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Finding the Fourth Proportional to 478,172.34, 659,877.84 and 263,311.89

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Solution

The fourth proportional to 478,172.34, 659,877.84 and 263,311.89 is: 363,370.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,172.34 : 659,877.84 = 263,311.89 : x
  2. Step 2: Convert to fraction form
    478,172.34/659,877.84 = 263,311.89/x
  3. Step 3: Cross multiply
    478,172.34x = 659,877.84 × 263,311.89
  4. Step 4: Simplify right side
    478,172.34x = 173,753,681,219.52
  5. Step 5: Solve for x
    x = 173,753,681,219.52/478,172.34
  6. Step 6: Final answer
    x = 363,370.41

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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.