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Finding the Fourth Proportional to 355,908.67, 533,909.99 and 131,426.89

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Solution

The fourth proportional to 355,908.67, 533,909.99 and 131,426.89 is: 197,157.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,908.67 : 533,909.99 = 131,426.89 : x
  2. Step 2: Convert to fraction form
    355,908.67/533,909.99 = 131,426.89/x
  3. Step 3: Cross multiply
    355,908.67x = 533,909.99 × 131,426.89
  4. Step 4: Simplify right side
    355,908.67x = 70,170,129,525.63
  5. Step 5: Solve for x
    x = 70,170,129,525.63/355,908.67
  6. Step 6: Final answer
    x = 197,157.69

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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.