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Finding the Fourth Proportional to 266,790.80, 400,056.60 and 148,336.40

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Solution

The fourth proportional to 266,790.80, 400,056.60 and 148,336.40 is: 222,432.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,790.80 : 400,056.60 = 148,336.40 : x
  2. Step 2: Convert to fraction form
    266,790.80/400,056.60 = 148,336.40/x
  3. Step 3: Cross multiply
    266,790.80x = 400,056.60 × 148,336.40
  4. Step 4: Simplify right side
    266,790.80x = 59,342,955,840.24
  5. Step 5: Solve for x
    x = 59,342,955,840.24/266,790.80
  6. Step 6: Final answer
    x = 222,432.54

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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.