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Finding the Fourth Proportional to 261,404.59, 392,272.62 and 111,645.67

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Solution

The fourth proportional to 261,404.59, 392,272.62 and 111,645.67 is: 167,539.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,404.59 : 392,272.62 = 111,645.67 : x
  2. Step 2: Convert to fraction form
    261,404.59/392,272.62 = 111,645.67/x
  3. Step 3: Cross multiply
    261,404.59x = 392,272.62 × 111,645.67
  4. Step 4: Simplify right side
    261,404.59x = 43,795,538,343.45
  5. Step 5: Solve for x
    x = 43,795,538,343.45/261,404.59
  6. Step 6: Final answer
    x = 167,539.28

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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.