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Finding the Fourth Proportional to 351,601.86, 527,406.06 and 85,364.70

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Solution

The fourth proportional to 351,601.86, 527,406.06 and 85,364.70 is: 128,047.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,601.86 : 527,406.06 = 85,364.70 : x
  2. Step 2: Convert to fraction form
    351,601.86/527,406.06 = 85,364.70/x
  3. Step 3: Cross multiply
    351,601.86x = 527,406.06 × 85,364.70
  4. Step 4: Simplify right side
    351,601.86x = 45,021,860,090.08
  5. Step 5: Solve for x
    x = 45,021,860,090.08/351,601.86
  6. Step 6: Final answer
    x = 128,047.84

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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.