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Finding the Fourth Proportional to 402,024.40, 603,036.60 and 380,251.60

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Solution

The fourth proportional to 402,024.40, 603,036.60 and 380,251.60 is: 570,377.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,024.40 : 603,036.60 = 380,251.60 : x
  2. Step 2: Convert to fraction form
    402,024.40/603,036.60 = 380,251.60/x
  3. Step 3: Cross multiply
    402,024.40x = 603,036.60 × 380,251.60
  4. Step 4: Simplify right side
    402,024.40x = 229,305,632,008.56
  5. Step 5: Solve for x
    x = 229,305,632,008.56/402,024.40
  6. Step 6: Final answer
    x = 570,377.40

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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.