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Finding the Fourth Proportional to 276,856.60, 415,025.70 and 216,851.80

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Solution

The fourth proportional to 276,856.60, 415,025.70 and 216,851.80 is: 325,074.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,856.60 : 415,025.70 = 216,851.80 : x
  2. Step 2: Convert to fraction form
    276,856.60/415,025.70 = 216,851.80/x
  3. Step 3: Cross multiply
    276,856.60x = 415,025.70 × 216,851.80
  4. Step 4: Simplify right side
    276,856.60x = 89,999,070,091.26
  5. Step 5: Solve for x
    x = 89,999,070,091.26/276,856.60
  6. Step 6: Final answer
    x = 325,074.68

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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.