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Finding the Fourth Proportional to 451,309.16, 622,724.99 and 290,127.26

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Solution

The fourth proportional to 451,309.16, 622,724.99 and 290,127.26 is: 400,323.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,309.16 : 622,724.99 = 290,127.26 : x
  2. Step 2: Convert to fraction form
    451,309.16/622,724.99 = 290,127.26/x
  3. Step 3: Cross multiply
    451,309.16x = 622,724.99 × 290,127.26
  4. Step 4: Simplify right side
    451,309.16x = 180,669,495,188.40
  5. Step 5: Solve for x
    x = 180,669,495,188.40/451,309.16
  6. Step 6: Final answer
    x = 400,323.13

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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.