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Finding the Fourth Proportional to 345,818.93, 477,220.61 and 192,861.77

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Solution

The fourth proportional to 345,818.93, 477,220.61 and 192,861.77 is: 266,143.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,818.93 : 477,220.61 = 192,861.77 : x
  2. Step 2: Convert to fraction form
    345,818.93/477,220.61 = 192,861.77/x
  3. Step 3: Cross multiply
    345,818.93x = 477,220.61 × 192,861.77
  4. Step 4: Simplify right side
    345,818.93x = 92,037,609,621.13
  5. Step 5: Solve for x
    x = 92,037,609,621.13/345,818.93
  6. Step 6: Final answer
    x = 266,143.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.