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Finding the Fourth Proportional to 279,080.96, 385,127.34 and 151,755.44

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Solution

The fourth proportional to 279,080.96, 385,127.34 and 151,755.44 is: 209,420.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,080.96 : 385,127.34 = 151,755.44 : x
  2. Step 2: Convert to fraction form
    279,080.96/385,127.34 = 151,755.44/x
  3. Step 3: Cross multiply
    279,080.96x = 385,127.34 × 151,755.44
  4. Step 4: Simplify right side
    279,080.96x = 58,445,169,331.47
  5. Step 5: Solve for x
    x = 58,445,169,331.47/279,080.96
  6. Step 6: Final answer
    x = 209,420.12

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1.5x scale

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.