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Finding the Fourth Proportional to 383,655, 575,715.78 and 162,039

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Solution

The fourth proportional to 383,655, 575,715.78 and 162,039 is: 243,157.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,655 : 575,715.78 = 162,039 : x
  2. Step 2: Convert to fraction form
    383,655/575,715.78 = 162,039/x
  3. Step 3: Cross multiply
    383,655x = 575,715.78 × 162,039
  4. Step 4: Simplify right side
    383,655x = 93,288,409,275.42
  5. Step 5: Solve for x
    x = 93,288,409,275.42/383,655
  6. Step 6: Final answer
    x = 243,157.03

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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.