Home / 303,989.24-456,006.78-90,740.31

Finding the Fourth Proportional to 303,989.24, 456,006.78 and 90,740.31

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Solution

The fourth proportional to 303,989.24, 456,006.78 and 90,740.31 is: 136,117.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,989.24 : 456,006.78 = 90,740.31 : x
  2. Step 2: Convert to fraction form
    303,989.24/456,006.78 = 90,740.31/x
  3. Step 3: Cross multiply
    303,989.24x = 456,006.78 × 90,740.31
  4. Step 4: Simplify right side
    303,989.24x = 41,378,196,579.30
  5. Step 5: Solve for x
    x = 41,378,196,579.30/303,989.24
  6. Step 6: Final answer
    x = 136,117.31

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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.