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Finding the Fourth Proportional to 515,378.72, 773,141.01 and 160,428.62

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Solution

The fourth proportional to 515,378.72, 773,141.01 and 160,428.62 is: 240,665.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,378.72 : 773,141.01 = 160,428.62 : x
  2. Step 2: Convert to fraction form
    515,378.72/773,141.01 = 160,428.62/x
  3. Step 3: Cross multiply
    515,378.72x = 773,141.01 × 160,428.62
  4. Step 4: Simplify right side
    515,378.72x = 124,033,945,299.71
  5. Step 5: Solve for x
    x = 124,033,945,299.71/515,378.72
  6. Step 6: Final answer
    x = 240,665.63

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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.