Home / 287,069.90-430,651.19-87,343.25

Finding the Fourth Proportional to 287,069.90, 430,651.19 and 87,343.25

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Solution

The fourth proportional to 287,069.90, 430,651.19 and 87,343.25 is: 131,028.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,069.90 : 430,651.19 = 87,343.25 : x
  2. Step 2: Convert to fraction form
    287,069.90/430,651.19 = 87,343.25/x
  3. Step 3: Cross multiply
    287,069.90x = 430,651.19 × 87,343.25
  4. Step 4: Simplify right side
    287,069.90x = 37,614,472,616.07
  5. Step 5: Solve for x
    x = 37,614,472,616.07/287,069.90
  6. Step 6: Final answer
    x = 131,028.97

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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.