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Finding the Fourth Proportional to 279,036.54, 385,260.60 and 187,293.42

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Solution

The fourth proportional to 279,036.54, 385,260.60 and 187,293.42 is: 258,592.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,036.54 : 385,260.60 = 187,293.42 : x
  2. Step 2: Convert to fraction form
    279,036.54/385,260.60 = 187,293.42/x
  3. Step 3: Cross multiply
    279,036.54x = 385,260.60 × 187,293.42
  4. Step 4: Simplify right side
    279,036.54x = 72,156,775,570.86
  5. Step 5: Solve for x
    x = 72,156,775,570.86/279,036.54
  6. Step 6: Final answer
    x = 258,592.57

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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.