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Finding the Fourth Proportional to 277,320.60, 415,980.90 and 266,434.20

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Solution

The fourth proportional to 277,320.60, 415,980.90 and 266,434.20 is: 399,651.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,320.60 : 415,980.90 = 266,434.20 : x
  2. Step 2: Convert to fraction form
    277,320.60/415,980.90 = 266,434.20/x
  3. Step 3: Cross multiply
    277,320.60x = 415,980.90 × 266,434.20
  4. Step 4: Simplify right side
    277,320.60x = 110,831,538,306.78
  5. Step 5: Solve for x
    x = 110,831,538,306.78/277,320.60
  6. Step 6: Final answer
    x = 399,651.30

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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.