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Finding the Fourth Proportional to 318,350.70, 439,314.76 and 175,110.78

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Solution

The fourth proportional to 318,350.70, 439,314.76 and 175,110.78 is: 241,647.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,350.70 : 439,314.76 = 175,110.78 : x
  2. Step 2: Convert to fraction form
    318,350.70/439,314.76 = 175,110.78/x
  3. Step 3: Cross multiply
    318,350.70x = 439,314.76 × 175,110.78
  4. Step 4: Simplify right side
    318,350.70x = 76,928,750,289.11
  5. Step 5: Solve for x
    x = 76,928,750,289.11/318,350.70
  6. Step 6: Final answer
    x = 241,647.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.