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Finding the Fourth Proportional to 231,838.80, 346,786.20 and 208,316.40

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Solution

The fourth proportional to 231,838.80, 346,786.20 and 208,316.40 is: 311,601.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,838.80 : 346,786.20 = 208,316.40 : x
  2. Step 2: Convert to fraction form
    231,838.80/346,786.20 = 208,316.40/x
  3. Step 3: Cross multiply
    231,838.80x = 346,786.20 × 208,316.40
  4. Step 4: Simplify right side
    231,838.80x = 72,241,252,753.68
  5. Step 5: Solve for x
    x = 72,241,252,753.68/231,838.80
  6. Step 6: Final answer
    x = 311,601.22

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1.5x scale

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.