Home / 318,217.43-439,030.77-197,315.21

Finding the Fourth Proportional to 318,217.43, 439,030.77 and 197,315.21

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Solution

The fourth proportional to 318,217.43, 439,030.77 and 197,315.21 is: 272,227.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,217.43 : 439,030.77 = 197,315.21 : x
  2. Step 2: Convert to fraction form
    318,217.43/439,030.77 = 197,315.21/x
  3. Step 3: Cross multiply
    318,217.43x = 439,030.77 × 197,315.21
  4. Step 4: Simplify right side
    318,217.43x = 86,627,446,383.86
  5. Step 5: Solve for x
    x = 86,627,446,383.86/318,217.43
  6. Step 6: Final answer
    x = 272,227.22

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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.