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Finding the Fourth Proportional to 660,256.18, 990,449.88 and 239,564.86

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Solution

The fourth proportional to 660,256.18, 990,449.88 and 239,564.86 is: 359,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,256.18 : 990,449.88 = 239,564.86 : x
  2. Step 2: Convert to fraction form
    660,256.18/990,449.88 = 239,564.86/x
  3. Step 3: Cross multiply
    660,256.18x = 990,449.88 × 239,564.86
  4. Step 4: Simplify right side
    660,256.18x = 237,276,986,839.22
  5. Step 5: Solve for x
    x = 237,276,986,839.22/660,256.18
  6. Step 6: Final answer
    x = 359,371.10

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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.