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Finding the Fourth Proportional to 318,429.81, 477,568.08 and 93,729.15

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Solution

The fourth proportional to 318,429.81, 477,568.08 and 93,729.15 is: 140,571.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,429.81 : 477,568.08 = 93,729.15 : x
  2. Step 2: Convert to fraction form
    318,429.81/477,568.08 = 93,729.15/x
  3. Step 3: Cross multiply
    318,429.81x = 477,568.08 × 93,729.15
  4. Step 4: Simplify right side
    318,429.81x = 44,762,050,205.53
  5. Step 5: Solve for x
    x = 44,762,050,205.53/318,429.81
  6. Step 6: Final answer
    x = 140,571.17

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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.