Home / 318,217.85-439,156.42-197,398.07

Finding the Fourth Proportional to 318,217.85, 439,156.42 and 197,398.07

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Solution

The fourth proportional to 318,217.85, 439,156.42 and 197,398.07 is: 272,419.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,217.85 : 439,156.42 = 197,398.07 : x
  2. Step 2: Convert to fraction form
    318,217.85/439,156.42 = 197,398.07/x
  3. Step 3: Cross multiply
    318,217.85x = 439,156.42 × 197,398.07
  4. Step 4: Simplify right side
    318,217.85x = 86,688,629,736.11
  5. Step 5: Solve for x
    x = 86,688,629,736.11/318,217.85
  6. Step 6: Final answer
    x = 272,419.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.