Home / 287,228.20-430,906.26-87,564.12

Finding the Fourth Proportional to 287,228.20, 430,906.26 and 87,564.12

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Solution

The fourth proportional to 287,228.20, 430,906.26 and 87,564.12 is: 131,365.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,228.20 : 430,906.26 = 87,564.12 : x
  2. Step 2: Convert to fraction form
    287,228.20/430,906.26 = 87,564.12/x
  3. Step 3: Cross multiply
    287,228.20x = 430,906.26 × 87,564.12
  4. Step 4: Simplify right side
    287,228.20x = 37,731,927,459.39
  5. Step 5: Solve for x
    x = 37,731,927,459.39/287,228.20
  6. Step 6: Final answer
    x = 131,365.68

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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.