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Finding the Fourth Proportional to 400,871.60, 601,362.78 and 134,708.24

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Solution

The fourth proportional to 400,871.60, 601,362.78 and 134,708.24 is: 202,080.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,871.60 : 601,362.78 = 134,708.24 : x
  2. Step 2: Convert to fraction form
    400,871.60/601,362.78 = 134,708.24/x
  3. Step 3: Cross multiply
    400,871.60x = 601,362.78 × 134,708.24
  4. Step 4: Simplify right side
    400,871.60x = 81,008,521,695.31
  5. Step 5: Solve for x
    x = 81,008,521,695.31/400,871.60
  6. Step 6: Final answer
    x = 202,080.97

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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.