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Finding the Fourth Proportional to 318,310.60, 477,465.90 and 96,665.80

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Solution

The fourth proportional to 318,310.60, 477,465.90 and 96,665.80 is: 144,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,310.60 : 477,465.90 = 96,665.80 : x
  2. Step 2: Convert to fraction form
    318,310.60/477,465.90 = 96,665.80/x
  3. Step 3: Cross multiply
    318,310.60x = 477,465.90 × 96,665.80
  4. Step 4: Simplify right side
    318,310.60x = 46,154,623,196.22
  5. Step 5: Solve for x
    x = 46,154,623,196.22/318,310.60
  6. Step 6: Final answer
    x = 144,998.70

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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.