Home / 287,171.28-430,757.16-137,376.24

Finding the Fourth Proportional to 287,171.28, 430,757.16 and 137,376.24

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Solution

The fourth proportional to 287,171.28, 430,757.16 and 137,376.24 is: 206,064.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,171.28 : 430,757.16 = 137,376.24 : x
  2. Step 2: Convert to fraction form
    287,171.28/430,757.16 = 137,376.24/x
  3. Step 3: Cross multiply
    287,171.28x = 430,757.16 × 137,376.24
  4. Step 4: Simplify right side
    287,171.28x = 59,175,798,993.88
  5. Step 5: Solve for x
    x = 59,175,798,993.88/287,171.28
  6. Step 6: Final answer
    x = 206,064.47

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1.5x scale

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.