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Finding the Fourth Proportional to 612,842.52, 919,270.20 and 186,447.76

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Solution

The fourth proportional to 612,842.52, 919,270.20 and 186,447.76 is: 279,673.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,842.52 : 919,270.20 = 186,447.76 : x
  2. Step 2: Convert to fraction form
    612,842.52/919,270.20 = 186,447.76/x
  3. Step 3: Cross multiply
    612,842.52x = 919,270.20 × 186,447.76
  4. Step 4: Simplify right side
    612,842.52x = 171,395,869,624.75
  5. Step 5: Solve for x
    x = 171,395,869,624.75/612,842.52
  6. Step 6: Final answer
    x = 279,673.59

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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.