Home / 288,622.11-398,316.20-161,307.87

Finding the Fourth Proportional to 288,622.11, 398,316.20 and 161,307.87

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Solution

The fourth proportional to 288,622.11, 398,316.20 and 161,307.87 is: 222,614.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,622.11 : 398,316.20 = 161,307.87 : x
  2. Step 2: Convert to fraction form
    288,622.11/398,316.20 = 161,307.87/x
  3. Step 3: Cross multiply
    288,622.11x = 398,316.20 × 161,307.87
  4. Step 4: Simplify right side
    288,622.11x = 64,251,537,001.95
  5. Step 5: Solve for x
    x = 64,251,537,001.95/288,622.11
  6. Step 6: Final answer
    x = 222,614.74

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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.