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Finding the Fourth Proportional to 318,492.40, 477,661.74 and 93,791.80

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Solution

The fourth proportional to 318,492.40, 477,661.74 and 93,791.80 is: 140,665.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,492.40 : 477,661.74 = 93,791.80 : x
  2. Step 2: Convert to fraction form
    318,492.40/477,661.74 = 93,791.80/x
  3. Step 3: Cross multiply
    318,492.40x = 477,661.74 × 93,791.80
  4. Step 4: Simplify right side
    318,492.40x = 44,800,754,385.73
  5. Step 5: Solve for x
    x = 44,800,754,385.73/318,492.40
  6. Step 6: Final answer
    x = 140,665.07

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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.