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Finding the Fourth Proportional to 371,856.63, 513,142.50 and 210,713.61

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Solution

The fourth proportional to 371,856.63, 513,142.50 and 210,713.61 is: 290,773.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,856.63 : 513,142.50 = 210,713.61 : x
  2. Step 2: Convert to fraction form
    371,856.63/513,142.50 = 210,713.61/x
  3. Step 3: Cross multiply
    371,856.63x = 513,142.50 × 210,713.61
  4. Step 4: Simplify right side
    371,856.63x = 108,126,108,619.43
  5. Step 5: Solve for x
    x = 108,126,108,619.43/371,856.63
  6. Step 6: Final answer
    x = 290,773.65

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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.