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Finding the Fourth Proportional to 318,407.68, 477,390.09 and 118,674.44

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Solution

The fourth proportional to 318,407.68, 477,390.09 and 118,674.44 is: 177,929.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,407.68 : 477,390.09 = 118,674.44 : x
  2. Step 2: Convert to fraction form
    318,407.68/477,390.09 = 118,674.44/x
  3. Step 3: Cross multiply
    318,407.68x = 477,390.09 × 118,674.44
  4. Step 4: Simplify right side
    318,407.68x = 56,654,002,616.36
  5. Step 5: Solve for x
    x = 56,654,002,616.36/318,407.68
  6. Step 6: Final answer
    x = 177,929.13

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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.