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Finding the Fourth Proportional to 402,959.40, 603,920.70 and 245,020.20

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Solution

The fourth proportional to 402,959.40, 603,920.70 and 245,020.20 is: 367,215.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,959.40 : 603,920.70 = 245,020.20 : x
  2. Step 2: Convert to fraction form
    402,959.40/603,920.70 = 245,020.20/x
  3. Step 3: Cross multiply
    402,959.40x = 603,920.70 × 245,020.20
  4. Step 4: Simplify right side
    402,959.40x = 147,972,770,698.14
  5. Step 5: Solve for x
    x = 147,972,770,698.14/402,959.40
  6. Step 6: Final answer
    x = 367,215.09

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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.