Home / 280,623.89-420,939.48-93,635.39

Finding the Fourth Proportional to 280,623.89, 420,939.48 and 93,635.39

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Solution

The fourth proportional to 280,623.89, 420,939.48 and 93,635.39 is: 140,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,623.89 : 420,939.48 = 93,635.39 : x
  2. Step 2: Convert to fraction form
    280,623.89/420,939.48 = 93,635.39/x
  3. Step 3: Cross multiply
    280,623.89x = 420,939.48 × 93,635.39
  4. Step 4: Simplify right side
    280,623.89x = 39,414,830,271.50
  5. Step 5: Solve for x
    x = 39,414,830,271.50/280,623.89
  6. Step 6: Final answer
    x = 140,454.30

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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.