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Finding the Fourth Proportional to 318,309.60, 477,464.40 and 96,664.80

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Solution

The fourth proportional to 318,309.60, 477,464.40 and 96,664.80 is: 144,997.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,309.60 : 477,464.40 = 96,664.80 : x
  2. Step 2: Convert to fraction form
    318,309.60/477,464.40 = 96,664.80/x
  3. Step 3: Cross multiply
    318,309.60x = 477,464.40 × 96,664.80
  4. Step 4: Simplify right side
    318,309.60x = 46,154,000,733.12
  5. Step 5: Solve for x
    x = 46,154,000,733.12/318,309.60
  6. Step 6: Final answer
    x = 144,997.20

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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.