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Finding the Fourth Proportional to 393,280.62, 542,728.71 and 223,514.22

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Solution

The fourth proportional to 393,280.62, 542,728.71 and 223,514.22 is: 308,450.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,280.62 : 542,728.71 = 223,514.22 : x
  2. Step 2: Convert to fraction form
    393,280.62/542,728.71 = 223,514.22/x
  3. Step 3: Cross multiply
    393,280.62x = 542,728.71 × 223,514.22
  4. Step 4: Simplify right side
    393,280.62x = 121,307,584,287.26
  5. Step 5: Solve for x
    x = 121,307,584,287.26/393,280.62
  6. Step 6: Final answer
    x = 308,450.45

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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.