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Finding the Fourth Proportional to 342,912.48, 473,172.35 and 189,912.89

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Solution

The fourth proportional to 342,912.48, 473,172.35 and 189,912.89 is: 262,053.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,912.48 : 473,172.35 = 189,912.89 : x
  2. Step 2: Convert to fraction form
    342,912.48/473,172.35 = 189,912.89/x
  3. Step 3: Cross multiply
    342,912.48x = 473,172.35 × 189,912.89
  4. Step 4: Simplify right side
    342,912.48x = 89,861,528,456.59
  5. Step 5: Solve for x
    x = 89,861,528,456.59/342,912.48
  6. Step 6: Final answer
    x = 262,053.83

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1.5x scale

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.