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Finding the Fourth Proportional to 660,315.88, 990,954.78 and 239,625.64

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Solution

The fourth proportional to 660,315.88, 990,954.78 and 239,625.64 is: 359,613.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,315.88 : 990,954.78 = 239,625.64 : x
  2. Step 2: Convert to fraction form
    660,315.88/990,954.78 = 239,625.64/x
  3. Step 3: Cross multiply
    660,315.88x = 990,954.78 × 239,625.64
  4. Step 4: Simplify right side
    660,315.88x = 237,458,173,368.56
  5. Step 5: Solve for x
    x = 237,458,173,368.56/660,315.88
  6. Step 6: Final answer
    x = 359,613.00

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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.