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Finding the Fourth Proportional to 355,704.95, 533,558.34 and 145,342.89

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Solution

The fourth proportional to 355,704.95, 533,558.34 and 145,342.89 is: 218,014.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,704.95 : 533,558.34 = 145,342.89 : x
  2. Step 2: Convert to fraction form
    355,704.95/533,558.34 = 145,342.89/x
  3. Step 3: Cross multiply
    355,704.95x = 533,558.34 × 145,342.89
  4. Step 4: Simplify right side
    355,704.95x = 77,548,911,119.20
  5. Step 5: Solve for x
    x = 77,548,911,119.20/355,704.95
  6. Step 6: Final answer
    x = 218,014.71

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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.