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Finding the Fourth Proportional to 318,309.64, 477,390.38 and 93,609.98

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Solution

The fourth proportional to 318,309.64, 477,390.38 and 93,609.98 is: 140,393.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,309.64 : 477,390.38 = 93,609.98 : x
  2. Step 2: Convert to fraction form
    318,309.64/477,390.38 = 93,609.98/x
  3. Step 3: Cross multiply
    318,309.64x = 477,390.38 × 93,609.98
  4. Step 4: Simplify right side
    318,309.64x = 44,688,503,923.99
  5. Step 5: Solve for x
    x = 44,688,503,923.99/318,309.64
  6. Step 6: Final answer
    x = 140,393.18

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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.