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Finding the Fourth Proportional to 393,265.94, 542,753.08 and 223,525.58

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Solution

The fourth proportional to 393,265.94, 542,753.08 and 223,525.58 is: 308,491.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,265.94 : 542,753.08 = 223,525.58 : x
  2. Step 2: Convert to fraction form
    393,265.94/542,753.08 = 223,525.58/x
  3. Step 3: Cross multiply
    393,265.94x = 542,753.08 × 223,525.58
  4. Step 4: Simplify right side
    393,265.94x = 121,319,195,886.16
  5. Step 5: Solve for x
    x = 121,319,195,886.16/393,265.94
  6. Step 6: Final answer
    x = 308,491.49

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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.