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Finding the Fourth Proportional to 266,051.70, 399,077.55 and 213,563.70

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Solution

The fourth proportional to 266,051.70, 399,077.55 and 213,563.70 is: 320,345.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,051.70 : 399,077.55 = 213,563.70 : x
  2. Step 2: Convert to fraction form
    266,051.70/399,077.55 = 213,563.70/x
  3. Step 3: Cross multiply
    266,051.70x = 399,077.55 × 213,563.70
  4. Step 4: Simplify right side
    266,051.70x = 85,228,478,164.94
  5. Step 5: Solve for x
    x = 85,228,478,164.94/266,051.70
  6. Step 6: Final answer
    x = 320,345.55

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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.