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Finding the Fourth Proportional to 318,765.36, 478,235.34 and 94,125.60

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Solution

The fourth proportional to 318,765.36, 478,235.34 and 94,125.60 is: 141,214.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,765.36 : 478,235.34 = 94,125.60 : x
  2. Step 2: Convert to fraction form
    318,765.36/478,235.34 = 94,125.60/x
  3. Step 3: Cross multiply
    318,765.36x = 478,235.34 × 94,125.60
  4. Step 4: Simplify right side
    318,765.36x = 45,014,188,318.70
  5. Step 5: Solve for x
    x = 45,014,188,318.70/318,765.36
  6. Step 6: Final answer
    x = 141,214.18

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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.