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Finding the Fourth Proportional to 371,840.88, 513,077.04 and 210,662.64

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Solution

The fourth proportional to 371,840.88, 513,077.04 and 210,662.64 is: 290,678.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,840.88 : 513,077.04 = 210,662.64 : x
  2. Step 2: Convert to fraction form
    371,840.88/513,077.04 = 210,662.64/x
  3. Step 3: Cross multiply
    371,840.88x = 513,077.04 × 210,662.64
  4. Step 4: Simplify right side
    371,840.88x = 108,086,163,769.79
  5. Step 5: Solve for x
    x = 108,086,163,769.79/371,840.88
  6. Step 6: Final answer
    x = 290,678.54

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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.