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Finding the Fourth Proportional to 400,990.92, 601,515.90 and 134,749.50

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Solution

The fourth proportional to 400,990.92, 601,515.90 and 134,749.50 is: 202,134.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,990.92 : 601,515.90 = 134,749.50 : x
  2. Step 2: Convert to fraction form
    400,990.92/601,515.90 = 134,749.50/x
  3. Step 3: Cross multiply
    400,990.92x = 601,515.90 × 134,749.50
  4. Step 4: Simplify right side
    400,990.92x = 81,053,966,767.05
  5. Step 5: Solve for x
    x = 81,053,966,767.05/400,990.92
  6. Step 6: Final answer
    x = 202,134.17

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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.