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Finding the Fourth Proportional to 192,688.69, 288,658.98 and 141,995.70

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Solution

The fourth proportional to 192,688.69, 288,658.98 and 141,995.70 is: 212,717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,688.69 : 288,658.98 = 141,995.70 : x
  2. Step 2: Convert to fraction form
    192,688.69/288,658.98 = 141,995.70/x
  3. Step 3: Cross multiply
    192,688.69x = 288,658.98 × 141,995.70
  4. Step 4: Simplify right side
    192,688.69x = 40,988,333,926.39
  5. Step 5: Solve for x
    x = 40,988,333,926.39/192,688.69
  6. Step 6: Final answer
    x = 212,717.90

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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.