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Finding the Fourth Proportional to 439,453.18, 606,428.82 and 248,470.68

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Solution

The fourth proportional to 439,453.18, 606,428.82 and 248,470.68 is: 342,880.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,453.18 : 606,428.82 = 248,470.68 : x
  2. Step 2: Convert to fraction form
    439,453.18/606,428.82 = 248,470.68/x
  3. Step 3: Cross multiply
    439,453.18x = 606,428.82 × 248,470.68
  4. Step 4: Simplify right side
    439,453.18x = 150,679,781,277.00
  5. Step 5: Solve for x
    x = 150,679,781,277.00/439,453.18
  6. Step 6: Final answer
    x = 342,880.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.