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Finding the Fourth Proportional to 660,255.18, 990,448.38 and 239,563.86

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Solution

The fourth proportional to 660,255.18, 990,448.38 and 239,563.86 is: 359,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,255.18 : 990,448.38 = 239,563.86 : x
  2. Step 2: Convert to fraction form
    660,255.18/990,448.38 = 239,563.86/x
  3. Step 3: Cross multiply
    660,255.18x = 990,448.38 × 239,563.86
  4. Step 4: Simplify right side
    660,255.18x = 237,275,637,043.55
  5. Step 5: Solve for x
    x = 237,275,637,043.55/660,255.18
  6. Step 6: Final answer
    x = 359,369.60

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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.