Home / 280,255.52-420,291.12-93,216.80

Finding the Fourth Proportional to 280,255.52, 420,291.12 and 93,216.80

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Solution

The fourth proportional to 280,255.52, 420,291.12 and 93,216.80 is: 139,794.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,255.52 : 420,291.12 = 93,216.80 : x
  2. Step 2: Convert to fraction form
    280,255.52/420,291.12 = 93,216.80/x
  3. Step 3: Cross multiply
    280,255.52x = 420,291.12 × 93,216.80
  4. Step 4: Simplify right side
    280,255.52x = 39,178,193,274.82
  5. Step 5: Solve for x
    x = 39,178,193,274.82/280,255.52
  6. Step 6: Final answer
    x = 139,794.55

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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.