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Finding the Fourth Proportional to 636,347.48, 954,318.24 and 209,803.82

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Solution

The fourth proportional to 636,347.48, 954,318.24 and 209,803.82 is: 314,638.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,347.48 : 954,318.24 = 209,803.82 : x
  2. Step 2: Convert to fraction form
    636,347.48/954,318.24 = 209,803.82/x
  3. Step 3: Cross multiply
    636,347.48x = 954,318.24 × 209,803.82
  4. Step 4: Simplify right side
    636,347.48x = 200,219,612,247.68
  5. Step 5: Solve for x
    x = 200,219,612,247.68/636,347.48
  6. Step 6: Final answer
    x = 314,638.81

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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.