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Finding the Fourth Proportional to 642,245.16, 886,287.24 and 355,759.24

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Solution

The fourth proportional to 642,245.16, 886,287.24 and 355,759.24 is: 490,941.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,245.16 : 886,287.24 = 355,759.24 : x
  2. Step 2: Convert to fraction form
    642,245.16/886,287.24 = 355,759.24/x
  3. Step 3: Cross multiply
    642,245.16x = 886,287.24 × 355,759.24
  4. Step 4: Simplify right side
    642,245.16x = 315,304,874,924.10
  5. Step 5: Solve for x
    x = 315,304,874,924.10/642,245.16
  6. Step 6: Final answer
    x = 490,941.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.