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Finding the Fourth Proportional to 408,427.22, 611,386.81 and 369,936.02

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Solution

The fourth proportional to 408,427.22, 611,386.81 and 369,936.02 is: 553,768.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,427.22 : 611,386.81 = 369,936.02 : x
  2. Step 2: Convert to fraction form
    408,427.22/611,386.81 = 369,936.02/x
  3. Step 3: Cross multiply
    408,427.22x = 611,386.81 × 369,936.02
  4. Step 4: Simplify right side
    408,427.22x = 226,173,999,190.12
  5. Step 5: Solve for x
    x = 226,173,999,190.12/408,427.22
  6. Step 6: Final answer
    x = 553,768.19

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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.