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Finding the Fourth Proportional to 279,613.92, 385,871.70 and 152,289.52

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Solution

The fourth proportional to 279,613.92, 385,871.70 and 152,289.52 is: 210,161.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,613.92 : 385,871.70 = 152,289.52 : x
  2. Step 2: Convert to fraction form
    279,613.92/385,871.70 = 152,289.52/x
  3. Step 3: Cross multiply
    279,613.92x = 385,871.70 × 152,289.52
  4. Step 4: Simplify right side
    279,613.92x = 58,764,214,724.36
  5. Step 5: Solve for x
    x = 58,764,214,724.36/279,613.92
  6. Step 6: Final answer
    x = 210,161.98

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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.