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Finding the Fourth Proportional to 373,816.55, 515,860.25 and 212,668.16

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Solution

The fourth proportional to 373,816.55, 515,860.25 and 212,668.16 is: 293,478.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,816.55 : 515,860.25 = 212,668.16 : x
  2. Step 2: Convert to fraction form
    373,816.55/515,860.25 = 212,668.16/x
  3. Step 3: Cross multiply
    373,816.55x = 515,860.25 × 212,668.16
  4. Step 4: Simplify right side
    373,816.55x = 109,707,046,542.00
  5. Step 5: Solve for x
    x = 109,707,046,542.00/373,816.55
  6. Step 6: Final answer
    x = 293,478.30

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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.