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Finding the Fourth Proportional to 660,286.98, 990,142.05 and 233,681.01

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Solution

The fourth proportional to 660,286.98, 990,142.05 and 233,681.01 is: 350,419.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,286.98 : 990,142.05 = 233,681.01 : x
  2. Step 2: Convert to fraction form
    660,286.98/990,142.05 = 233,681.01/x
  3. Step 3: Cross multiply
    660,286.98x = 990,142.05 × 233,681.01
  4. Step 4: Simplify right side
    660,286.98x = 231,377,394,287.47
  5. Step 5: Solve for x
    x = 231,377,394,287.47/660,286.98
  6. Step 6: Final answer
    x = 350,419.44

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1.5x scale

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.