Home / 287,987.05-397,308.46-180,517.87

Finding the Fourth Proportional to 287,987.05, 397,308.46 and 180,517.87

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Solution

The fourth proportional to 287,987.05, 397,308.46 and 180,517.87 is: 249,043.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,987.05 : 397,308.46 = 180,517.87 : x
  2. Step 2: Convert to fraction form
    287,987.05/397,308.46 = 180,517.87/x
  3. Step 3: Cross multiply
    287,987.05x = 397,308.46 × 180,517.87
  4. Step 4: Simplify right side
    287,987.05x = 71,721,276,932.18
  5. Step 5: Solve for x
    x = 71,721,276,932.18/287,987.05
  6. Step 6: Final answer
    x = 249,043.41

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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.