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Finding the Fourth Proportional to 393,267.19, 542,754.80 and 223,526.83

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Solution

The fourth proportional to 393,267.19, 542,754.80 and 223,526.83 is: 308,493.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,267.19 : 542,754.80 = 223,526.83 : x
  2. Step 2: Convert to fraction form
    393,267.19/542,754.80 = 223,526.83/x
  3. Step 3: Cross multiply
    393,267.19x = 542,754.80 × 223,526.83
  4. Step 4: Simplify right side
    393,267.19x = 121,320,259,911.28
  5. Step 5: Solve for x
    x = 121,320,259,911.28/393,267.19
  6. Step 6: Final answer
    x = 308,493.22

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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.