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Finding the Fourth Proportional to 293,388.40, 440,082.60 and 143,724.70

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Solution

The fourth proportional to 293,388.40, 440,082.60 and 143,724.70 is: 215,587.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,388.40 : 440,082.60 = 143,724.70 : x
  2. Step 2: Convert to fraction form
    293,388.40/440,082.60 = 143,724.70/x
  3. Step 3: Cross multiply
    293,388.40x = 440,082.60 × 143,724.70
  4. Step 4: Simplify right side
    293,388.40x = 63,250,739,660.22
  5. Step 5: Solve for x
    x = 63,250,739,660.22/293,388.40
  6. Step 6: Final answer
    x = 215,587.05

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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.