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Finding the Fourth Proportional to 318,311.50, 477,365.81 and 105,039.66

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Solution

The fourth proportional to 318,311.50, 477,365.81 and 105,039.66 is: 157,526.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,311.50 : 477,365.81 = 105,039.66 : x
  2. Step 2: Convert to fraction form
    318,311.50/477,365.81 = 105,039.66/x
  3. Step 3: Cross multiply
    318,311.50x = 477,365.81 × 105,039.66
  4. Step 4: Simplify right side
    318,311.50x = 50,142,342,378.02
  5. Step 5: Solve for x
    x = 50,142,342,378.02/318,311.50
  6. Step 6: Final answer
    x = 157,526.02

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1.5x scale

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.