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Finding the Fourth Proportional to 243,011.68, 364,485.52 and 72,229.75

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Solution

The fourth proportional to 243,011.68, 364,485.52 and 72,229.75 is: 108,335.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,011.68 : 364,485.52 = 72,229.75 : x
  2. Step 2: Convert to fraction form
    243,011.68/364,485.52 = 72,229.75/x
  3. Step 3: Cross multiply
    243,011.68x = 364,485.52 × 72,229.75
  4. Step 4: Simplify right side
    243,011.68x = 26,326,697,167.29
  5. Step 5: Solve for x
    x = 26,326,697,167.29/243,011.68
  6. Step 6: Final answer
    x = 108,335.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.