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Finding the Fourth Proportional to 280,014.36, 386,493.48 and 159,226.44

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Solution

The fourth proportional to 280,014.36, 386,493.48 and 159,226.44 is: 219,774.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,014.36 : 386,493.48 = 159,226.44 : x
  2. Step 2: Convert to fraction form
    280,014.36/386,493.48 = 159,226.44/x
  3. Step 3: Cross multiply
    280,014.36x = 386,493.48 × 159,226.44
  4. Step 4: Simplify right side
    280,014.36x = 61,539,980,903.61
  5. Step 5: Solve for x
    x = 61,539,980,903.61/280,014.36
  6. Step 6: Final answer
    x = 219,774.37

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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.