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Finding the Fourth Proportional to 287,757.37, 397,090.60 and 158,718.30

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Solution

The fourth proportional to 287,757.37, 397,090.60 and 158,718.30 is: 219,023.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,757.37 : 397,090.60 = 158,718.30 : x
  2. Step 2: Convert to fraction form
    287,757.37/397,090.60 = 158,718.30/x
  3. Step 3: Cross multiply
    287,757.37x = 397,090.60 × 158,718.30
  4. Step 4: Simplify right side
    287,757.37x = 63,025,544,977.98
  5. Step 5: Solve for x
    x = 63,025,544,977.98/287,757.37
  6. Step 6: Final answer
    x = 219,023.22

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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.