Home / 287,190.84-430,983.12-100,202.40

Finding the Fourth Proportional to 287,190.84, 430,983.12 and 100,202.40

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Solution

The fourth proportional to 287,190.84, 430,983.12 and 100,202.40 is: 150,372.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,190.84 : 430,983.12 = 100,202.40 : x
  2. Step 2: Convert to fraction form
    287,190.84/430,983.12 = 100,202.40/x
  3. Step 3: Cross multiply
    287,190.84x = 430,983.12 × 100,202.40
  4. Step 4: Simplify right side
    287,190.84x = 43,185,542,983.49
  5. Step 5: Solve for x
    x = 43,185,542,983.49/287,190.84
  6. Step 6: Final answer
    x = 150,372.29

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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.