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Finding the Fourth Proportional to 353,407.12, 530,108.20 and 143,042.02

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Solution

The fourth proportional to 353,407.12, 530,108.20 and 143,042.02 is: 214,562.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,407.12 : 530,108.20 = 143,042.02 : x
  2. Step 2: Convert to fraction form
    353,407.12/530,108.20 = 143,042.02/x
  3. Step 3: Cross multiply
    353,407.12x = 530,108.20 × 143,042.02
  4. Step 4: Simplify right side
    353,407.12x = 75,827,747,746.56
  5. Step 5: Solve for x
    x = 75,827,747,746.56/353,407.12
  6. Step 6: Final answer
    x = 214,562.03

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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.