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Finding the Fourth Proportional to 281,551.75, 388,547.69 and 160,690.61

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Solution

The fourth proportional to 281,551.75, 388,547.69 and 160,690.61 is: 221,756.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,551.75 : 388,547.69 = 160,690.61 : x
  2. Step 2: Convert to fraction form
    281,551.75/388,547.69 = 160,690.61/x
  3. Step 3: Cross multiply
    281,551.75x = 388,547.69 × 160,690.61
  4. Step 4: Simplify right side
    281,551.75x = 62,435,965,320.19
  5. Step 5: Solve for x
    x = 62,435,965,320.19/281,551.75
  6. Step 6: Final answer
    x = 221,756.62

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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.