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Finding the Fourth Proportional to 281,699.73, 388,782.86 and 160,813.71

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Solution

The fourth proportional to 281,699.73, 388,782.86 and 160,813.71 is: 221,944.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,699.73 : 388,782.86 = 160,813.71 : x
  2. Step 2: Convert to fraction form
    281,699.73/388,782.86 = 160,813.71/x
  3. Step 3: Cross multiply
    281,699.73x = 388,782.86 × 160,813.71
  4. Step 4: Simplify right side
    281,699.73x = 62,521,613,296.94
  5. Step 5: Solve for x
    x = 62,521,613,296.94/281,699.73
  6. Step 6: Final answer
    x = 221,944.17

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1.5x scale

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.