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Finding the Fourth Proportional to 399,210.72, 550,907.01 and 246,187.74

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Solution

The fourth proportional to 399,210.72, 550,907.01 and 246,187.74 is: 339,736.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,210.72 : 550,907.01 = 246,187.74 : x
  2. Step 2: Convert to fraction form
    399,210.72/550,907.01 = 246,187.74/x
  3. Step 3: Cross multiply
    399,210.72x = 550,907.01 × 246,187.74
  4. Step 4: Simplify right side
    399,210.72x = 135,626,551,742.06
  5. Step 5: Solve for x
    x = 135,626,551,742.06/399,210.72
  6. Step 6: Final answer
    x = 339,736.75

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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.