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Finding the Fourth Proportional to 660,044.16, 990,057.60 and 161,412.48

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Solution

The fourth proportional to 660,044.16, 990,057.60 and 161,412.48 is: 242,116.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,044.16 : 990,057.60 = 161,412.48 : x
  2. Step 2: Convert to fraction form
    660,044.16/990,057.60 = 161,412.48/x
  3. Step 3: Cross multiply
    660,044.16x = 990,057.60 × 161,412.48
  4. Step 4: Simplify right side
    660,044.16x = 159,807,652,558.85
  5. Step 5: Solve for x
    x = 159,807,652,558.85/660,044.16
  6. Step 6: Final answer
    x = 242,116.61

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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.