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Finding the Fourth Proportional to 253,526.11, 379,742.47 and 238,620.89

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Solution

The fourth proportional to 253,526.11, 379,742.47 and 238,620.89 is: 357,416.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,526.11 : 379,742.47 = 238,620.89 : x
  2. Step 2: Convert to fraction form
    253,526.11/379,742.47 = 238,620.89/x
  3. Step 3: Cross multiply
    253,526.11x = 379,742.47 × 238,620.89
  4. Step 4: Simplify right side
    253,526.11x = 90,614,486,515.00
  5. Step 5: Solve for x
    x = 90,614,486,515.00/253,526.11
  6. Step 6: Final answer
    x = 357,416.79

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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.