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Finding the Fourth Proportional to 318,321.54, 477,551.52 and 105,098.76

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Solution

The fourth proportional to 318,321.54, 477,551.52 and 105,098.76 is: 157,670.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,321.54 : 477,551.52 = 105,098.76 : x
  2. Step 2: Convert to fraction form
    318,321.54/477,551.52 = 105,098.76/x
  3. Step 3: Cross multiply
    318,321.54x = 477,551.52 × 105,098.76
  4. Step 4: Simplify right side
    318,321.54x = 50,190,072,588.12
  5. Step 5: Solve for x
    x = 50,190,072,588.12/318,321.54
  6. Step 6: Final answer
    x = 157,670.99

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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.