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Finding the Fourth Proportional to 203,500.71, 280,848.74 and 118,615.95

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Solution

The fourth proportional to 203,500.71, 280,848.74 and 118,615.95 is: 163,700.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,500.71 : 280,848.74 = 118,615.95 : x
  2. Step 2: Convert to fraction form
    203,500.71/280,848.74 = 118,615.95/x
  3. Step 3: Cross multiply
    203,500.71x = 280,848.74 × 118,615.95
  4. Step 4: Simplify right side
    203,500.71x = 33,313,139,508.32
  5. Step 5: Solve for x
    x = 33,313,139,508.32/203,500.71
  6. Step 6: Final answer
    x = 163,700.36

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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.