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Finding the Fourth Proportional to 389,767.68, 537,786.36 and 268,870.32

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Solution

The fourth proportional to 389,767.68, 537,786.36 and 268,870.32 is: 370,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,767.68 : 537,786.36 = 268,870.32 : x
  2. Step 2: Convert to fraction form
    389,767.68/537,786.36 = 268,870.32/x
  3. Step 3: Cross multiply
    389,767.68x = 537,786.36 × 268,870.32
  4. Step 4: Simplify right side
    389,767.68x = 144,594,790,704.84
  5. Step 5: Solve for x
    x = 144,594,790,704.84/389,767.68
  6. Step 6: Final answer
    x = 370,976.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.