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Finding the Fourth Proportional to 279,240.89, 385,486.27 and 171,902.93

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Solution

The fourth proportional to 279,240.89, 385,486.27 and 171,902.93 is: 237,308.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,240.89 : 385,486.27 = 171,902.93 : x
  2. Step 2: Convert to fraction form
    279,240.89/385,486.27 = 171,902.93/x
  3. Step 3: Cross multiply
    279,240.89x = 385,486.27 × 171,902.93
  4. Step 4: Simplify right side
    279,240.89x = 66,266,216,500.83
  5. Step 5: Solve for x
    x = 66,266,216,500.83/279,240.89
  6. Step 6: Final answer
    x = 237,308.43

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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.