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Finding the Fourth Proportional to 318,980.02, 478,571.64 and 94,341.82

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Solution

The fourth proportional to 318,980.02, 478,571.64 and 94,341.82 is: 141,542.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,980.02 : 478,571.64 = 94,341.82 : x
  2. Step 2: Convert to fraction form
    318,980.02/478,571.64 = 94,341.82/x
  3. Step 3: Cross multiply
    318,980.02x = 478,571.64 × 94,341.82
  4. Step 4: Simplify right side
    318,980.02x = 45,149,319,517.98
  5. Step 5: Solve for x
    x = 45,149,319,517.98/318,980.02
  6. Step 6: Final answer
    x = 141,542.78

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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.