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Finding the Fourth Proportional to 318,645.60, 478,515.60 and 176,431.20

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Solution

The fourth proportional to 318,645.60, 478,515.60 and 176,431.20 is: 264,949.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,645.60 : 478,515.60 = 176,431.20 : x
  2. Step 2: Convert to fraction form
    318,645.60/478,515.60 = 176,431.20/x
  3. Step 3: Cross multiply
    318,645.60x = 478,515.60 × 176,431.20
  4. Step 4: Simplify right side
    318,645.60x = 84,425,081,526.72
  5. Step 5: Solve for x
    x = 84,425,081,526.72/318,645.60
  6. Step 6: Final answer
    x = 264,949.78

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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.