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Finding the Fourth Proportional to 353,407.37, 530,108.55 and 143,042.27

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Solution

The fourth proportional to 353,407.37, 530,108.55 and 143,042.27 is: 214,562.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,407.37 : 530,108.55 = 143,042.27 : x
  2. Step 2: Convert to fraction form
    353,407.37/530,108.55 = 143,042.27/x
  3. Step 3: Cross multiply
    353,407.37x = 530,108.55 × 143,042.27
  4. Step 4: Simplify right side
    353,407.37x = 75,827,927,687.87
  5. Step 5: Solve for x
    x = 75,827,927,687.87/353,407.37
  6. Step 6: Final answer
    x = 214,562.39

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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.