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Finding the Fourth Proportional to 347,254.20, 520,103.70 and 207,286.20

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Solution

The fourth proportional to 347,254.20, 520,103.70 and 207,286.20 is: 310,465.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,254.20 : 520,103.70 = 207,286.20 : x
  2. Step 2: Convert to fraction form
    347,254.20/520,103.70 = 207,286.20/x
  3. Step 3: Cross multiply
    347,254.20x = 520,103.70 × 207,286.20
  4. Step 4: Simplify right side
    347,254.20x = 107,810,319,578.94
  5. Step 5: Solve for x
    x = 107,810,319,578.94/347,254.20
  6. Step 6: Final answer
    x = 310,465.13

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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.