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Finding the Fourth Proportional to 318,982.02, 478,574.64 and 94,343.82

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Solution

The fourth proportional to 318,982.02, 478,574.64 and 94,343.82 is: 141,545.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,982.02 : 478,574.64 = 94,343.82 : x
  2. Step 2: Convert to fraction form
    318,982.02/478,574.64 = 94,343.82/x
  3. Step 3: Cross multiply
    318,982.02x = 478,574.64 × 94,343.82
  4. Step 4: Simplify right side
    318,982.02x = 45,150,559,692.72
  5. Step 5: Solve for x
    x = 45,150,559,692.72/318,982.02
  6. Step 6: Final answer
    x = 141,545.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.