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Finding the Fourth Proportional to 280,461.60, 420,562.80 and 122,608.80

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Solution

The fourth proportional to 280,461.60, 420,562.80 and 122,608.80 is: 183,856.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,461.60 : 420,562.80 = 122,608.80 : x
  2. Step 2: Convert to fraction form
    280,461.60/420,562.80 = 122,608.80/x
  3. Step 3: Cross multiply
    280,461.60x = 420,562.80 × 122,608.80
  4. Step 4: Simplify right side
    280,461.60x = 51,564,700,232.64
  5. Step 5: Solve for x
    x = 51,564,700,232.64/280,461.60
  6. Step 6: Final answer
    x = 183,856.54

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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.