Home / 287,757.27-397,090.42-158,718.20

Finding the Fourth Proportional to 287,757.27, 397,090.42 and 158,718.20

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Solution

The fourth proportional to 287,757.27, 397,090.42 and 158,718.20 is: 219,023.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,757.27 : 397,090.42 = 158,718.20 : x
  2. Step 2: Convert to fraction form
    287,757.27/397,090.42 = 158,718.20/x
  3. Step 3: Cross multiply
    287,757.27x = 397,090.42 × 158,718.20
  4. Step 4: Simplify right side
    287,757.27x = 63,025,474,317.40
  5. Step 5: Solve for x
    x = 63,025,474,317.40/287,757.27
  6. Step 6: Final answer
    x = 219,023.05

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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.