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Finding the Fourth Proportional to 571,643.05, 857,796.72 and 256,099.95

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Solution

The fourth proportional to 571,643.05, 857,796.72 and 256,099.95 is: 384,298.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,643.05 : 857,796.72 = 256,099.95 : x
  2. Step 2: Convert to fraction form
    571,643.05/857,796.72 = 256,099.95/x
  3. Step 3: Cross multiply
    571,643.05x = 857,796.72 × 256,099.95
  4. Step 4: Simplify right side
    571,643.05x = 219,681,697,102.16
  5. Step 5: Solve for x
    x = 219,681,697,102.16/571,643.05
  6. Step 6: Final answer
    x = 384,298.73

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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.