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Finding the Fourth Proportional to 203,587.32, 305,401.90 and 70,467.36

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Solution

The fourth proportional to 203,587.32, 305,401.90 and 70,467.36 is: 105,708.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,587.32 : 305,401.90 = 70,467.36 : x
  2. Step 2: Convert to fraction form
    203,587.32/305,401.90 = 70,467.36/x
  3. Step 3: Cross multiply
    203,587.32x = 305,401.90 × 70,467.36
  4. Step 4: Simplify right side
    203,587.32x = 21,520,865,631.98
  5. Step 5: Solve for x
    x = 21,520,865,631.98/203,587.32
  6. Step 6: Final answer
    x = 105,708.28

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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.