Home / 287,259.96-430,936.68-84,876.60

Finding the Fourth Proportional to 287,259.96, 430,936.68 and 84,876.60

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Solution

The fourth proportional to 287,259.96, 430,936.68 and 84,876.60 is: 127,328.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,259.96 : 430,936.68 = 84,876.60 : x
  2. Step 2: Convert to fraction form
    287,259.96/430,936.68 = 84,876.60/x
  3. Step 3: Cross multiply
    287,259.96x = 430,936.68 × 84,876.60
  4. Step 4: Simplify right side
    287,259.96x = 36,576,440,213.69
  5. Step 5: Solve for x
    x = 36,576,440,213.69/287,259.96
  6. Step 6: Final answer
    x = 127,328.71

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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.