Home / 287,711.28-397,093.32-180,374.40

Finding the Fourth Proportional to 287,711.28, 397,093.32 and 180,374.40

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Solution

The fourth proportional to 287,711.28, 397,093.32 and 180,374.40 is: 248,949.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,711.28 : 397,093.32 = 180,374.40 : x
  2. Step 2: Convert to fraction form
    287,711.28/397,093.32 = 180,374.40/x
  3. Step 3: Cross multiply
    287,711.28x = 397,093.32 × 180,374.40
  4. Step 4: Simplify right side
    287,711.28x = 71,625,469,339.01
  5. Step 5: Solve for x
    x = 71,625,469,339.01/287,711.28
  6. Step 6: Final answer
    x = 248,949.12

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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.