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Finding the Fourth Proportional to 445,643.63, 614,989.22 and 254,656.56

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Solution

The fourth proportional to 445,643.63, 614,989.22 and 254,656.56 is: 351,426.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,643.63 : 614,989.22 = 254,656.56 : x
  2. Step 2: Convert to fraction form
    445,643.63/614,989.22 = 254,656.56/x
  3. Step 3: Cross multiply
    445,643.63x = 614,989.22 × 254,656.56
  4. Step 4: Simplify right side
    445,643.63x = 156,611,037,929.00
  5. Step 5: Solve for x
    x = 156,611,037,929.00/445,643.63
  6. Step 6: Final answer
    x = 351,426.63

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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.