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Finding the Fourth Proportional to 402,067.72, 603,009.46 and 240,007.56

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Solution

The fourth proportional to 402,067.72, 603,009.46 and 240,007.56 is: 359,956.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,067.72 : 603,009.46 = 240,007.56 : x
  2. Step 2: Convert to fraction form
    402,067.72/603,009.46 = 240,007.56/x
  3. Step 3: Cross multiply
    402,067.72x = 603,009.46 × 240,007.56
  4. Step 4: Simplify right side
    402,067.72x = 144,726,829,151.52
  5. Step 5: Solve for x
    x = 144,726,829,151.52/402,067.72
  6. Step 6: Final answer
    x = 359,956.35

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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.