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Finding the Fourth Proportional to 449,716.44, 620,643.96 and 256,132.32

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Solution

The fourth proportional to 449,716.44, 620,643.96 and 256,132.32 is: 353,482.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,716.44 : 620,643.96 = 256,132.32 : x
  2. Step 2: Convert to fraction form
    449,716.44/620,643.96 = 256,132.32/x
  3. Step 3: Cross multiply
    449,716.44x = 620,643.96 × 256,132.32
  4. Step 4: Simplify right side
    449,716.44x = 158,966,977,368.79
  5. Step 5: Solve for x
    x = 158,966,977,368.79/449,716.44
  6. Step 6: Final answer
    x = 353,482.69

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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.