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Finding the Fourth Proportional to 287,906.54, 397,319.55 and 160,590.62

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Solution

The fourth proportional to 287,906.54, 397,319.55 and 160,590.62 is: 221,619.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,906.54 : 397,319.55 = 160,590.62 : x
  2. Step 2: Convert to fraction form
    287,906.54/397,319.55 = 160,590.62/x
  3. Step 3: Cross multiply
    287,906.54x = 397,319.55 × 160,590.62
  4. Step 4: Simplify right side
    287,906.54x = 63,805,792,872.62
  5. Step 5: Solve for x
    x = 63,805,792,872.62/287,906.54
  6. Step 6: Final answer
    x = 221,619.81

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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.