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Finding the Fourth Proportional to 287,755.62, 397,107.71 and 158,708.91

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Solution

The fourth proportional to 287,755.62, 397,107.71 and 158,708.91 is: 219,021.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,755.62 : 397,107.71 = 158,708.91 : x
  2. Step 2: Convert to fraction form
    287,755.62/397,107.71 = 158,708.91/x
  3. Step 3: Cross multiply
    287,755.62x = 397,107.71 × 158,708.91
  4. Step 4: Simplify right side
    287,755.62x = 63,024,531,806.70
  5. Step 5: Solve for x
    x = 63,024,531,806.70/287,755.62
  6. Step 6: Final answer
    x = 219,021.03

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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.