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Finding the Fourth Proportional to 347,256.20, 520,106.70 and 207,288.20

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Solution

The fourth proportional to 347,256.20, 520,106.70 and 207,288.20 is: 310,468.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,256.20 : 520,106.70 = 207,288.20 : x
  2. Step 2: Convert to fraction form
    347,256.20/520,106.70 = 207,288.20/x
  3. Step 3: Cross multiply
    347,256.20x = 520,106.70 × 207,288.20
  4. Step 4: Simplify right side
    347,256.20x = 107,811,981,650.94
  5. Step 5: Solve for x
    x = 107,811,981,650.94/347,256.20
  6. Step 6: Final answer
    x = 310,468.13

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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.