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Finding the Fourth Proportional to 439,889.85, 659,613.33 and 214,913.16

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Solution

The fourth proportional to 439,889.85, 659,613.33 and 214,913.16 is: 322,261.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,889.85 : 659,613.33 = 214,913.16 : x
  2. Step 2: Convert to fraction form
    439,889.85/659,613.33 = 214,913.16/x
  3. Step 3: Cross multiply
    439,889.85x = 659,613.33 × 214,913.16
  4. Step 4: Simplify right side
    439,889.85x = 141,759,585,128.42
  5. Step 5: Solve for x
    x = 141,759,585,128.42/439,889.85
  6. Step 6: Final answer
    x = 322,261.55

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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.