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Finding the Fourth Proportional to 281,689.29, 388,727.91 and 152,625.24

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Solution

The fourth proportional to 281,689.29, 388,727.91 and 152,625.24 is: 210,621.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,689.29 : 388,727.91 = 152,625.24 : x
  2. Step 2: Convert to fraction form
    281,689.29/388,727.91 = 152,625.24/x
  3. Step 3: Cross multiply
    281,689.29x = 388,727.91 × 152,625.24
  4. Step 4: Simplify right side
    281,689.29x = 59,329,690,558.45
  5. Step 5: Solve for x
    x = 59,329,690,558.45/281,689.29
  6. Step 6: Final answer
    x = 210,621.04

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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.