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Finding the Fourth Proportional to 349,612.20, 524,418.30 and 310,213.80

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Solution

The fourth proportional to 349,612.20, 524,418.30 and 310,213.80 is: 465,320.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,612.20 : 524,418.30 = 310,213.80 : x
  2. Step 2: Convert to fraction form
    349,612.20/524,418.30 = 310,213.80/x
  3. Step 3: Cross multiply
    349,612.20x = 524,418.30 × 310,213.80
  4. Step 4: Simplify right side
    349,612.20x = 162,681,793,632.54
  5. Step 5: Solve for x
    x = 162,681,793,632.54/349,612.20
  6. Step 6: Final answer
    x = 465,320.70

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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.