Home / 331,615.77-457,166.38-280,423.11

Finding the Fourth Proportional to 331,615.77, 457,166.38 and 280,423.11

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Solution

The fourth proportional to 331,615.77, 457,166.38 and 280,423.11 is: 386,592.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,615.77 : 457,166.38 = 280,423.11 : x
  2. Step 2: Convert to fraction form
    331,615.77/457,166.38 = 280,423.11/x
  3. Step 3: Cross multiply
    331,615.77x = 457,166.38 × 280,423.11
  4. Step 4: Simplify right side
    331,615.77x = 128,200,019,606.15
  5. Step 5: Solve for x
    x = 128,200,019,606.15/331,615.77
  6. Step 6: Final answer
    x = 386,592.05

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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.