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Finding the Fourth Proportional to 287,832.76, 397,210.77 and 158,775.80

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Solution

The fourth proportional to 287,832.76, 397,210.77 and 158,775.80 is: 219,111.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,832.76 : 397,210.77 = 158,775.80 : x
  2. Step 2: Convert to fraction form
    287,832.76/397,210.77 = 158,775.80/x
  3. Step 3: Cross multiply
    287,832.76x = 397,210.77 × 158,775.80
  4. Step 4: Simplify right side
    287,832.76x = 63,067,455,789.31
  5. Step 5: Solve for x
    x = 63,067,455,789.31/287,832.76
  6. Step 6: Final answer
    x = 219,111.46

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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.