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Finding the Fourth Proportional to 347,710.32, 521,539.56 and 111,078

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Solution

The fourth proportional to 347,710.32, 521,539.56 and 111,078 is: 166,608.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,710.32 : 521,539.56 = 111,078 : x
  2. Step 2: Convert to fraction form
    347,710.32/521,539.56 = 111,078/x
  3. Step 3: Cross multiply
    347,710.32x = 521,539.56 × 111,078
  4. Step 4: Simplify right side
    347,710.32x = 57,931,571,245.68
  5. Step 5: Solve for x
    x = 57,931,571,245.68/347,710.32
  6. Step 6: Final answer
    x = 166,608.72

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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.