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Finding the Fourth Proportional to 353,418.88, 530,125.84 and 143,053.76

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Solution

The fourth proportional to 353,418.88, 530,125.84 and 143,053.76 is: 214,579.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,418.88 : 530,125.84 = 143,053.76 : x
  2. Step 2: Convert to fraction form
    353,418.88/530,125.84 = 143,053.76/x
  3. Step 3: Cross multiply
    353,418.88x = 530,125.84 × 143,053.76
  4. Step 4: Simplify right side
    353,418.88x = 75,836,494,685.16
  5. Step 5: Solve for x
    x = 75,836,494,685.16/353,418.88
  6. Step 6: Final answer
    x = 214,579.64

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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.