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Finding the Fourth Proportional to 372,579.42, 514,146.51 and 202,809.90

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Solution

The fourth proportional to 372,579.42, 514,146.51 and 202,809.90 is: 279,870.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,579.42 : 514,146.51 = 202,809.90 : x
  2. Step 2: Convert to fraction form
    372,579.42/514,146.51 = 202,809.90/x
  3. Step 3: Cross multiply
    372,579.42x = 514,146.51 × 202,809.90
  4. Step 4: Simplify right side
    372,579.42x = 104,274,002,278.45
  5. Step 5: Solve for x
    x = 104,274,002,278.45/372,579.42
  6. Step 6: Final answer
    x = 279,870.54

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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.