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Finding the Fourth Proportional to 346,719.80, 520,079.70 and 196,902.20

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Solution

The fourth proportional to 346,719.80, 520,079.70 and 196,902.20 is: 295,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,719.80 : 520,079.70 = 196,902.20 : x
  2. Step 2: Convert to fraction form
    346,719.80/520,079.70 = 196,902.20/x
  3. Step 3: Cross multiply
    346,719.80x = 520,079.70 × 196,902.20
  4. Step 4: Simplify right side
    346,719.80x = 102,404,837,105.34
  5. Step 5: Solve for x
    x = 102,404,837,105.34/346,719.80
  6. Step 6: Final answer
    x = 295,353.30

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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.