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Finding the Fourth Proportional to 353,908.84, 530,714.22 and 143,399.56

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Solution

The fourth proportional to 353,908.84, 530,714.22 and 143,399.56 is: 215,038.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,908.84 : 530,714.22 = 143,399.56 : x
  2. Step 2: Convert to fraction form
    353,908.84/530,714.22 = 143,399.56/x
  3. Step 3: Cross multiply
    353,908.84x = 530,714.22 × 143,399.56
  4. Step 4: Simplify right side
    353,908.84x = 76,104,185,633.74
  5. Step 5: Solve for x
    x = 76,104,185,633.74/353,908.84
  6. Step 6: Final answer
    x = 215,038.95

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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.