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Finding the Fourth Proportional to 368,783.58, 508,937.03 and 205,439.90

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Solution

The fourth proportional to 368,783.58, 508,937.03 and 205,439.90 is: 283,515.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,783.58 : 508,937.03 = 205,439.90 : x
  2. Step 2: Convert to fraction form
    368,783.58/508,937.03 = 205,439.90/x
  3. Step 3: Cross multiply
    368,783.58x = 508,937.03 × 205,439.90
  4. Step 4: Simplify right side
    368,783.58x = 104,555,968,977.61
  5. Step 5: Solve for x
    x = 104,555,968,977.61/368,783.58
  6. Step 6: Final answer
    x = 283,515.79

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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.