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Finding the Fourth Proportional to 371,798.85, 513,081.05 and 210,684.69

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Solution

The fourth proportional to 371,798.85, 513,081.05 and 210,684.69 is: 290,744.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,798.85 : 513,081.05 = 210,684.69 : x
  2. Step 2: Convert to fraction form
    371,798.85/513,081.05 = 210,684.69/x
  3. Step 3: Cross multiply
    371,798.85x = 513,081.05 × 210,684.69
  4. Step 4: Simplify right side
    371,798.85x = 108,098,322,490.84
  5. Step 5: Solve for x
    x = 108,098,322,490.84/371,798.85
  6. Step 6: Final answer
    x = 290,744.10

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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.