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Finding the Fourth Proportional to 239,775.70, 330,869.50 and 153,582.61

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Solution

The fourth proportional to 239,775.70, 330,869.50 and 153,582.61 is: 211,930.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,775.70 : 330,869.50 = 153,582.61 : x
  2. Step 2: Convert to fraction form
    239,775.70/330,869.50 = 153,582.61/x
  3. Step 3: Cross multiply
    239,775.70x = 330,869.50 × 153,582.61
  4. Step 4: Simplify right side
    239,775.70x = 50,815,801,379.40
  5. Step 5: Solve for x
    x = 50,815,801,379.40/239,775.70
  6. Step 6: Final answer
    x = 211,930.57

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1.5x scale

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.