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Finding the Fourth Proportional to 441,859.92, 661,870.29 and 281,139.72

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Solution

The fourth proportional to 441,859.92, 661,870.29 and 281,139.72 is: 421,124.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,859.92 : 661,870.29 = 281,139.72 : x
  2. Step 2: Convert to fraction form
    441,859.92/661,870.29 = 281,139.72/x
  3. Step 3: Cross multiply
    441,859.92x = 661,870.29 × 281,139.72
  4. Step 4: Simplify right side
    441,859.92x = 186,078,026,352.24
  5. Step 5: Solve for x
    x = 186,078,026,352.24/441,859.92
  6. Step 6: Final answer
    x = 421,124.48

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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.