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Finding the Fourth Proportional to 279,055.68, 385,094.88 and 151,731.36

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Solution

The fourth proportional to 279,055.68, 385,094.88 and 151,731.36 is: 209,388.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,055.68 : 385,094.88 = 151,731.36 : x
  2. Step 2: Convert to fraction form
    279,055.68/385,094.88 = 151,731.36/x
  3. Step 3: Cross multiply
    279,055.68x = 385,094.88 × 151,731.36
  4. Step 4: Simplify right side
    279,055.68x = 58,430,969,871.44
  5. Step 5: Solve for x
    x = 58,430,969,871.44/279,055.68
  6. Step 6: Final answer
    x = 209,388.21

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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.