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Finding the Fourth Proportional to 660,297.40, 990,157.64 and 233,691.44

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Solution

The fourth proportional to 660,297.40, 990,157.64 and 233,691.44 is: 350,435.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,297.40 : 990,157.64 = 233,691.44 : x
  2. Step 2: Convert to fraction form
    660,297.40/990,157.64 = 233,691.44/x
  3. Step 3: Cross multiply
    660,297.40x = 990,157.64 × 233,691.44
  4. Step 4: Simplify right side
    660,297.40x = 231,391,364,718.60
  5. Step 5: Solve for x
    x = 231,391,364,718.60/660,297.40
  6. Step 6: Final answer
    x = 350,435.07

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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.