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Finding the Fourth Proportional to 353,173.47, 529,760.21 and 103,855.47

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Solution

The fourth proportional to 353,173.47, 529,760.21 and 103,855.47 is: 155,783.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,173.47 : 529,760.21 = 103,855.47 : x
  2. Step 2: Convert to fraction form
    353,173.47/529,760.21 = 103,855.47/x
  3. Step 3: Cross multiply
    353,173.47x = 529,760.21 × 103,855.47
  4. Step 4: Simplify right side
    353,173.47x = 55,018,495,596.85
  5. Step 5: Solve for x
    x = 55,018,495,596.85/353,173.47
  6. Step 6: Final answer
    x = 155,783.21

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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.