Home / 279,008.38-385,015.21-151,682.86

Finding the Fourth Proportional to 279,008.38, 385,015.21 and 151,682.86

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Solution

The fourth proportional to 279,008.38, 385,015.21 and 151,682.86 is: 209,313.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,008.38 : 385,015.21 = 151,682.86 : x
  2. Step 2: Convert to fraction form
    279,008.38/385,015.21 = 151,682.86/x
  3. Step 3: Cross multiply
    279,008.38x = 385,015.21 × 151,682.86
  4. Step 4: Simplify right side
    279,008.38x = 58,400,208,196.30
  5. Step 5: Solve for x
    x = 58,400,208,196.30/279,008.38
  6. Step 6: Final answer
    x = 209,313.46

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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.