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Finding the Fourth Proportional to 383,090.35, 528,411.36 and 239,601.28

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Solution

The fourth proportional to 383,090.35, 528,411.36 and 239,601.28 is: 330,491.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,090.35 : 528,411.36 = 239,601.28 : x
  2. Step 2: Convert to fraction form
    383,090.35/528,411.36 = 239,601.28/x
  3. Step 3: Cross multiply
    383,090.35x = 528,411.36 × 239,601.28
  4. Step 4: Simplify right side
    383,090.35x = 126,608,038,222.54
  5. Step 5: Solve for x
    x = 126,608,038,222.54/383,090.35
  6. Step 6: Final answer
    x = 330,491.33

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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.