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Finding the Fourth Proportional to 393,260.94, 542,746.26 and 223,520.58

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Solution

The fourth proportional to 393,260.94, 542,746.26 and 223,520.58 is: 308,484.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,260.94 : 542,746.26 = 223,520.58 : x
  2. Step 2: Convert to fraction form
    393,260.94/542,746.26 = 223,520.58/x
  3. Step 3: Cross multiply
    393,260.94x = 542,746.26 × 223,520.58
  4. Step 4: Simplify right side
    393,260.94x = 121,314,958,828.03
  5. Step 5: Solve for x
    x = 121,314,958,828.03/393,260.94
  6. Step 6: Final answer
    x = 308,484.64

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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.