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Finding the Fourth Proportional to 287,772.62, 397,126.22 and 160,448.22

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Solution

The fourth proportional to 287,772.62, 397,126.22 and 160,448.22 is: 221,418.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,772.62 : 397,126.22 = 160,448.22 : x
  2. Step 2: Convert to fraction form
    287,772.62/397,126.22 = 160,448.22/x
  3. Step 3: Cross multiply
    287,772.62x = 397,126.22 × 160,448.22
  4. Step 4: Simplify right side
    287,772.62x = 63,718,194,312.09
  5. Step 5: Solve for x
    x = 63,718,194,312.09/287,772.62
  6. Step 6: Final answer
    x = 221,418.55

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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.