Home / 379,619.76-523,848.88-209,840.52

Finding the Fourth Proportional to 379,619.76, 523,848.88 and 209,840.52

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Solution

The fourth proportional to 379,619.76, 523,848.88 and 209,840.52 is: 289,565.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,619.76 : 523,848.88 = 209,840.52 : x
  2. Step 2: Convert to fraction form
    379,619.76/523,848.88 = 209,840.52/x
  3. Step 3: Cross multiply
    379,619.76x = 523,848.88 × 209,840.52
  4. Step 4: Simplify right side
    379,619.76x = 109,924,721,380.62
  5. Step 5: Solve for x
    x = 109,924,721,380.62/379,619.76
  6. Step 6: Final answer
    x = 289,565.33

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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.