Home / 279,031.21-385,076.23-158,174.84

Finding the Fourth Proportional to 279,031.21, 385,076.23 and 158,174.84

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Solution

The fourth proportional to 279,031.21, 385,076.23 and 158,174.84 is: 218,288.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,031.21 : 385,076.23 = 158,174.84 : x
  2. Step 2: Convert to fraction form
    279,031.21/385,076.23 = 158,174.84/x
  3. Step 3: Cross multiply
    279,031.21x = 385,076.23 × 158,174.84
  4. Step 4: Simplify right side
    279,031.21x = 60,909,371,635.31
  5. Step 5: Solve for x
    x = 60,909,371,635.31/279,031.21
  6. Step 6: Final answer
    x = 218,288.74

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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.