Home / 279,682.29-385,932.60-157,155.21

Finding the Fourth Proportional to 279,682.29, 385,932.60 and 157,155.21

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Solution

The fourth proportional to 279,682.29, 385,932.60 and 157,155.21 is: 216,857.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,682.29 : 385,932.60 = 157,155.21 : x
  2. Step 2: Convert to fraction form
    279,682.29/385,932.60 = 157,155.21/x
  3. Step 3: Cross multiply
    279,682.29x = 385,932.60 × 157,155.21
  4. Step 4: Simplify right side
    279,682.29x = 60,651,318,798.85
  5. Step 5: Solve for x
    x = 60,651,318,798.85/279,682.29
  6. Step 6: Final answer
    x = 216,857.92

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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.