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Finding the Fourth Proportional to 287,891.08, 397,290.40 and 160,574.92

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Solution

The fourth proportional to 287,891.08, 397,290.40 and 160,574.92 is: 221,593.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,891.08 : 397,290.40 = 160,574.92 : x
  2. Step 2: Convert to fraction form
    287,891.08/397,290.40 = 160,574.92/x
  3. Step 3: Cross multiply
    287,891.08x = 397,290.40 × 160,574.92
  4. Step 4: Simplify right side
    287,891.08x = 63,794,874,196.77
  5. Step 5: Solve for x
    x = 63,794,874,196.77/287,891.08
  6. Step 6: Final answer
    x = 221,593.79

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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.