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Finding the Fourth Proportional to 372,687.20, 514,303.20 and 202,921.32

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Solution

The fourth proportional to 372,687.20, 514,303.20 and 202,921.32 is: 280,028.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,687.20 : 514,303.20 = 202,921.32 : x
  2. Step 2: Convert to fraction form
    372,687.20/514,303.20 = 202,921.32/x
  3. Step 3: Cross multiply
    372,687.20x = 514,303.20 × 202,921.32
  4. Step 4: Simplify right side
    372,687.20x = 104,363,084,224.22
  5. Step 5: Solve for x
    x = 104,363,084,224.22/372,687.20
  6. Step 6: Final answer
    x = 280,028.63

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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.