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Finding the Fourth Proportional to 318,578.67, 477,951.03 and 118,900.71

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Solution

The fourth proportional to 318,578.67, 477,951.03 and 118,900.71 is: 178,382.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,578.67 : 477,951.03 = 118,900.71 : x
  2. Step 2: Convert to fraction form
    318,578.67/477,951.03 = 118,900.71/x
  3. Step 3: Cross multiply
    318,578.67x = 477,951.03 × 118,900.71
  4. Step 4: Simplify right side
    318,578.67x = 56,828,716,812.23
  5. Step 5: Solve for x
    x = 56,828,716,812.23/318,578.67
  6. Step 6: Final answer
    x = 178,382.05

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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.