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Finding the Fourth Proportional to 638,784.75, 958,339.13 and 239,426.67

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Solution

The fourth proportional to 638,784.75, 958,339.13 and 239,426.67 is: 359,200.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,784.75 : 958,339.13 = 239,426.67 : x
  2. Step 2: Convert to fraction form
    638,784.75/958,339.13 = 239,426.67/x
  3. Step 3: Cross multiply
    638,784.75x = 958,339.13 × 239,426.67
  4. Step 4: Simplify right side
    638,784.75x = 229,451,945,429.46
  5. Step 5: Solve for x
    x = 229,451,945,429.46/638,784.75
  6. Step 6: Final answer
    x = 359,200.73

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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.