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Finding the Fourth Proportional to 346,812.20, 520,218.30 and 324,002.60

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Solution

The fourth proportional to 346,812.20, 520,218.30 and 324,002.60 is: 486,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,812.20 : 520,218.30 = 324,002.60 : x
  2. Step 2: Convert to fraction form
    346,812.20/520,218.30 = 324,002.60/x
  3. Step 3: Cross multiply
    346,812.20x = 520,218.30 × 324,002.60
  4. Step 4: Simplify right side
    346,812.20x = 168,552,081,767.58
  5. Step 5: Solve for x
    x = 168,552,081,767.58/346,812.20
  6. Step 6: Final answer
    x = 486,003.90

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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.