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Finding the Fourth Proportional to 379,015.61, 523,040.09 and 209,248.52

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Solution

The fourth proportional to 379,015.61, 523,040.09 and 209,248.52 is: 288,762.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,015.61 : 523,040.09 = 209,248.52 : x
  2. Step 2: Convert to fraction form
    379,015.61/523,040.09 = 209,248.52/x
  3. Step 3: Cross multiply
    379,015.61x = 523,040.09 × 209,248.52
  4. Step 4: Simplify right side
    379,015.61x = 109,445,361,071.72
  5. Step 5: Solve for x
    x = 109,445,361,071.72/379,015.61
  6. Step 6: Final answer
    x = 288,762.15

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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.