Home / 279,431.18-385,665.36-164,703.12

Finding the Fourth Proportional to 279,431.18, 385,665.36 and 164,703.12

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Solution

The fourth proportional to 279,431.18, 385,665.36 and 164,703.12 is: 227,319.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,431.18 : 385,665.36 = 164,703.12 : x
  2. Step 2: Convert to fraction form
    279,431.18/385,665.36 = 164,703.12/x
  3. Step 3: Cross multiply
    279,431.18x = 385,665.36 × 164,703.12
  4. Step 4: Simplify right side
    279,431.18x = 63,520,288,067.92
  5. Step 5: Solve for x
    x = 63,520,288,067.92/279,431.18
  6. Step 6: Final answer
    x = 227,319.98

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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.