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Finding the Fourth Proportional to 638,889.50, 958,053.58 and 239,249.98

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Solution

The fourth proportional to 638,889.50, 958,053.58 and 239,249.98 is: 358,769.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,889.50 : 958,053.58 = 239,249.98 : x
  2. Step 2: Convert to fraction form
    638,889.50/958,053.58 = 239,249.98/x
  3. Step 3: Cross multiply
    638,889.50x = 958,053.58 × 239,249.98
  4. Step 4: Simplify right side
    638,889.50x = 229,214,299,853.93
  5. Step 5: Solve for x
    x = 229,214,299,853.93/638,889.50
  6. Step 6: Final answer
    x = 358,769.87

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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.