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Finding the Fourth Proportional to 266,441.44, 399,742.08 and 112,640.32

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Solution

The fourth proportional to 266,441.44, 399,742.08 and 112,640.32 is: 168,994.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,441.44 : 399,742.08 = 112,640.32 : x
  2. Step 2: Convert to fraction form
    266,441.44/399,742.08 = 112,640.32/x
  3. Step 3: Cross multiply
    266,441.44x = 399,742.08 × 112,640.32
  4. Step 4: Simplify right side
    266,441.44x = 45,027,075,808.67
  5. Step 5: Solve for x
    x = 45,027,075,808.67/266,441.44
  6. Step 6: Final answer
    x = 168,994.27

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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.