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Finding the Fourth Proportional to 379,851.09, 569,566.28 and 155,369.15

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Solution

The fourth proportional to 379,851.09, 569,566.28 and 155,369.15 is: 232,967.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,851.09 : 569,566.28 = 155,369.15 : x
  2. Step 2: Convert to fraction form
    379,851.09/569,566.28 = 155,369.15/x
  3. Step 3: Cross multiply
    379,851.09x = 569,566.28 × 155,369.15
  4. Step 4: Simplify right side
    379,851.09x = 88,493,031,672.54
  5. Step 5: Solve for x
    x = 88,493,031,672.54/379,851.09
  6. Step 6: Final answer
    x = 232,967.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.