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Finding the Fourth Proportional to 203,135.72, 304,730.24 and 69,980.22

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Solution

The fourth proportional to 203,135.72, 304,730.24 and 69,980.22 is: 104,979.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,135.72 : 304,730.24 = 69,980.22 : x
  2. Step 2: Convert to fraction form
    203,135.72/304,730.24 = 69,980.22/x
  3. Step 3: Cross multiply
    203,135.72x = 304,730.24 × 69,980.22
  4. Step 4: Simplify right side
    203,135.72x = 21,325,088,885.95
  5. Step 5: Solve for x
    x = 21,325,088,885.95/203,135.72
  6. Step 6: Final answer
    x = 104,979.52

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1.5x scale

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.