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Finding the Fourth Proportional to 318,293.60, 477,440.40 and 149,709.12

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Solution

The fourth proportional to 318,293.60, 477,440.40 and 149,709.12 is: 224,563.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,293.60 : 477,440.40 = 149,709.12 : x
  2. Step 2: Convert to fraction form
    318,293.60/477,440.40 = 149,709.12/x
  3. Step 3: Cross multiply
    318,293.60x = 477,440.40 × 149,709.12
  4. Step 4: Simplify right side
    318,293.60x = 71,477,182,136.45
  5. Step 5: Solve for x
    x = 71,477,182,136.45/318,293.60
  6. Step 6: Final answer
    x = 224,563.68

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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.