Home / 261,622.20-392,433.30-258,857.40

Finding the Fourth Proportional to 261,622.20, 392,433.30 and 258,857.40

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Solution

The fourth proportional to 261,622.20, 392,433.30 and 258,857.40 is: 388,286.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,622.20 : 392,433.30 = 258,857.40 : x
  2. Step 2: Convert to fraction form
    261,622.20/392,433.30 = 258,857.40/x
  3. Step 3: Cross multiply
    261,622.20x = 392,433.30 × 258,857.40
  4. Step 4: Simplify right side
    261,622.20x = 101,584,263,711.42
  5. Step 5: Solve for x
    x = 101,584,263,711.42/261,622.20
  6. Step 6: Final answer
    x = 388,286.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.