Home / 287,114.36-430,689.29-87,449.45

Finding the Fourth Proportional to 287,114.36, 430,689.29 and 87,449.45

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Solution

The fourth proportional to 287,114.36, 430,689.29 and 87,449.45 is: 131,179.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,114.36 : 430,689.29 = 87,449.45 : x
  2. Step 2: Convert to fraction form
    287,114.36/430,689.29 = 87,449.45/x
  3. Step 3: Cross multiply
    287,114.36x = 430,689.29 × 87,449.45
  4. Step 4: Simplify right side
    287,114.36x = 37,663,538,940.70
  5. Step 5: Solve for x
    x = 37,663,538,940.70/287,114.36
  6. Step 6: Final answer
    x = 131,179.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.