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Finding the Fourth Proportional to 660,285.51, 990,139.83 and 233,679.60

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Solution

The fourth proportional to 660,285.51, 990,139.83 and 233,679.60 is: 350,417.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,285.51 : 990,139.83 = 233,679.60 : x
  2. Step 2: Convert to fraction form
    660,285.51/990,139.83 = 233,679.60/x
  3. Step 3: Cross multiply
    660,285.51x = 990,139.83 × 233,679.60
  4. Step 4: Simplify right side
    660,285.51x = 231,375,479,418.47
  5. Step 5: Solve for x
    x = 231,375,479,418.47/660,285.51
  6. Step 6: Final answer
    x = 350,417.32

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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.