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Finding the Fourth Proportional to 277,318.60, 415,977.90 and 266,432.20

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Solution

The fourth proportional to 277,318.60, 415,977.90 and 266,432.20 is: 399,648.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,318.60 : 415,977.90 = 266,432.20 : x
  2. Step 2: Convert to fraction form
    277,318.60/415,977.90 = 266,432.20/x
  3. Step 3: Cross multiply
    277,318.60x = 415,977.90 × 266,432.20
  4. Step 4: Simplify right side
    277,318.60x = 110,829,907,048.38
  5. Step 5: Solve for x
    x = 110,829,907,048.38/277,318.60
  6. Step 6: Final answer
    x = 399,648.30

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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.