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Finding the Fourth Proportional to 243,156.79, 363,987.82 and 207,284.52

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Solution

The fourth proportional to 243,156.79, 363,987.82 and 207,284.52 is: 310,289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,156.79 : 363,987.82 = 207,284.52 : x
  2. Step 2: Convert to fraction form
    243,156.79/363,987.82 = 207,284.52/x
  3. Step 3: Cross multiply
    243,156.79x = 363,987.82 × 207,284.52
  4. Step 4: Simplify right side
    243,156.79x = 75,449,040,554.55
  5. Step 5: Solve for x
    x = 75,449,040,554.55/243,156.79
  6. Step 6: Final answer
    x = 310,289.67

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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.