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Finding the Fourth Proportional to 298,269.81, 411,630.05 and 170,953.61

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Solution

The fourth proportional to 298,269.81, 411,630.05 and 170,953.61 is: 235,926.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,269.81 : 411,630.05 = 170,953.61 : x
  2. Step 2: Convert to fraction form
    298,269.81/411,630.05 = 170,953.61/x
  3. Step 3: Cross multiply
    298,269.81x = 411,630.05 × 170,953.61
  4. Step 4: Simplify right side
    298,269.81x = 70,369,641,401.21
  5. Step 5: Solve for x
    x = 70,369,641,401.21/298,269.81
  6. Step 6: Final answer
    x = 235,926.13

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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.