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Finding the Fourth Proportional to 266,580.72, 367,921.44 and 153,381.60

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Solution

The fourth proportional to 266,580.72, 367,921.44 and 153,381.60 is: 211,689.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,580.72 : 367,921.44 = 153,381.60 : x
  2. Step 2: Convert to fraction form
    266,580.72/367,921.44 = 153,381.60/x
  3. Step 3: Cross multiply
    266,580.72x = 367,921.44 × 153,381.60
  4. Step 4: Simplify right side
    266,580.72x = 56,432,379,141.50
  5. Step 5: Solve for x
    x = 56,432,379,141.50/266,580.72
  6. Step 6: Final answer
    x = 211,689.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.