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Finding the Fourth Proportional to 306,012.72, 458,842.50 and 118,805.52

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Solution

The fourth proportional to 306,012.72, 458,842.50 and 118,805.52 is: 178,139.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,012.72 : 458,842.50 = 118,805.52 : x
  2. Step 2: Convert to fraction form
    306,012.72/458,842.50 = 118,805.52/x
  3. Step 3: Cross multiply
    306,012.72x = 458,842.50 × 118,805.52
  4. Step 4: Simplify right side
    306,012.72x = 54,513,021,810.60
  5. Step 5: Solve for x
    x = 54,513,021,810.60/306,012.72
  6. Step 6: Final answer
    x = 178,139.73

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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.