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Finding the Fourth Proportional to 280,630.40, 420,945.60 and 242,576.60

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Solution

The fourth proportional to 280,630.40, 420,945.60 and 242,576.60 is: 363,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,630.40 : 420,945.60 = 242,576.60 : x
  2. Step 2: Convert to fraction form
    280,630.40/420,945.60 = 242,576.60/x
  3. Step 3: Cross multiply
    280,630.40x = 420,945.60 × 242,576.60
  4. Step 4: Simplify right side
    280,630.40x = 102,111,552,432.96
  5. Step 5: Solve for x
    x = 102,111,552,432.96/280,630.40
  6. Step 6: Final answer
    x = 363,864.90

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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.