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Finding the Fourth Proportional to 605,278.40, 907,698.90 and 245,298.20

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Solution

The fourth proportional to 605,278.40, 907,698.90 and 245,298.20 is: 367,858.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,278.40 : 907,698.90 = 245,298.20 : x
  2. Step 2: Convert to fraction form
    605,278.40/907,698.90 = 245,298.20/x
  3. Step 3: Cross multiply
    605,278.40x = 907,698.90 × 245,298.20
  4. Step 4: Simplify right side
    605,278.40x = 222,656,906,311.98
  5. Step 5: Solve for x
    x = 222,656,906,311.98/605,278.40
  6. Step 6: Final answer
    x = 367,858.67

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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.