Home / 318,217.11-439,155.39-197,397.32

Finding the Fourth Proportional to 318,217.11, 439,155.39 and 197,397.32

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Solution

The fourth proportional to 318,217.11, 439,155.39 and 197,397.32 is: 272,418.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,217.11 : 439,155.39 = 197,397.32 : x
  2. Step 2: Convert to fraction form
    318,217.11/439,155.39 = 197,397.32/x
  3. Step 3: Cross multiply
    318,217.11x = 439,155.39 × 197,397.32
  4. Step 4: Simplify right side
    318,217.11x = 86,688,094,853.78
  5. Step 5: Solve for x
    x = 86,688,094,853.78/318,217.11
  6. Step 6: Final answer
    x = 272,418.08

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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.