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Finding the Fourth Proportional to 287,758.37, 397,091.98 and 158,719.30

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Solution

The fourth proportional to 287,758.37, 397,091.98 and 158,719.30 is: 219,024.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,758.37 : 397,091.98 = 158,719.30 : x
  2. Step 2: Convert to fraction form
    287,758.37/397,091.98 = 158,719.30/x
  3. Step 3: Cross multiply
    287,758.37x = 397,091.98 × 158,719.30
  4. Step 4: Simplify right side
    287,758.37x = 63,026,161,101.21
  5. Step 5: Solve for x
    x = 63,026,161,101.21/287,758.37
  6. Step 6: Final answer
    x = 219,024.60

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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.