Home / 280,216.88-420,328.98-93,228.38

Finding the Fourth Proportional to 280,216.88, 420,328.98 and 93,228.38

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Solution

The fourth proportional to 280,216.88, 420,328.98 and 93,228.38 is: 139,843.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,216.88 : 420,328.98 = 93,228.38 : x
  2. Step 2: Convert to fraction form
    280,216.88/420,328.98 = 93,228.38/x
  3. Step 3: Cross multiply
    280,216.88x = 420,328.98 × 93,228.38
  4. Step 4: Simplify right side
    280,216.88x = 39,186,587,770.81
  5. Step 5: Solve for x
    x = 39,186,587,770.81/280,216.88
  6. Step 6: Final answer
    x = 139,843.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.