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Finding the Fourth Proportional to 287,843.02, 397,223.75 and 158,778.58

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Solution

The fourth proportional to 287,843.02, 397,223.75 and 158,778.58 is: 219,114.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,843.02 : 397,223.75 = 158,778.58 : x
  2. Step 2: Convert to fraction form
    287,843.02/397,223.75 = 158,778.58/x
  3. Step 3: Cross multiply
    287,843.02x = 397,223.75 × 158,778.58
  4. Step 4: Simplify right side
    287,843.02x = 63,070,622,222.83
  5. Step 5: Solve for x
    x = 63,070,622,222.83/287,843.02
  6. Step 6: Final answer
    x = 219,114.65

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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.