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Finding the Fourth Proportional to 393,274.59, 542,722.73 and 223,509.93

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Solution

The fourth proportional to 393,274.59, 542,722.73 and 223,509.93 is: 308,445.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,274.59 : 542,722.73 = 223,509.93 : x
  2. Step 2: Convert to fraction form
    393,274.59/542,722.73 = 223,509.93/x
  3. Step 3: Cross multiply
    393,274.59x = 542,722.73 × 223,509.93
  4. Step 4: Simplify right side
    393,274.59x = 121,303,919,391.71
  5. Step 5: Solve for x
    x = 121,303,919,391.71/393,274.59
  6. Step 6: Final answer
    x = 308,445.86

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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.