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Finding the Fourth Proportional to 287,877.78, 397,272.03 and 160,561.58

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Solution

The fourth proportional to 287,877.78, 397,272.03 and 160,561.58 is: 221,575.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,877.78 : 397,272.03 = 160,561.58 : x
  2. Step 2: Convert to fraction form
    287,877.78/397,272.03 = 160,561.58/x
  3. Step 3: Cross multiply
    287,877.78x = 397,272.03 × 160,561.58
  4. Step 4: Simplify right side
    287,877.78x = 63,786,622,238.14
  5. Step 5: Solve for x
    x = 63,786,622,238.14/287,877.78
  6. Step 6: Final answer
    x = 221,575.36

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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.