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Finding the Fourth Proportional to 372,441.84, 513,980.46 and 202,686.72

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Solution

The fourth proportional to 372,441.84, 513,980.46 and 202,686.72 is: 279,713.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,441.84 : 513,980.46 = 202,686.72 : x
  2. Step 2: Convert to fraction form
    372,441.84/513,980.46 = 202,686.72/x
  3. Step 3: Cross multiply
    372,441.84x = 513,980.46 × 202,686.72
  4. Step 4: Simplify right side
    372,441.84x = 104,177,013,581.49
  5. Step 5: Solve for x
    x = 104,177,013,581.49/372,441.84
  6. Step 6: Final answer
    x = 279,713.51

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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.