Home / 287,799.29-397,153.22-158,742.88

Finding the Fourth Proportional to 287,799.29, 397,153.22 and 158,742.88

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Solution

The fourth proportional to 287,799.29, 397,153.22 and 158,742.88 is: 219,059.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,799.29 : 397,153.22 = 158,742.88 : x
  2. Step 2: Convert to fraction form
    287,799.29/397,153.22 = 158,742.88/x
  3. Step 3: Cross multiply
    287,799.29x = 397,153.22 × 158,742.88
  4. Step 4: Simplify right side
    287,799.29x = 63,045,246,893.53
  5. Step 5: Solve for x
    x = 63,045,246,893.53/287,799.29
  6. Step 6: Final answer
    x = 219,059.77

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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.