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Finding the Fourth Proportional to 383,572.32, 529,332.12 and 213,817.20

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Solution

The fourth proportional to 383,572.32, 529,332.12 and 213,817.20 is: 295,069.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,572.32 : 529,332.12 = 213,817.20 : x
  2. Step 2: Convert to fraction form
    383,572.32/529,332.12 = 213,817.20/x
  3. Step 3: Cross multiply
    383,572.32x = 529,332.12 × 213,817.20
  4. Step 4: Simplify right side
    383,572.32x = 113,180,311,768.46
  5. Step 5: Solve for x
    x = 113,180,311,768.46/383,572.32
  6. Step 6: Final answer
    x = 295,069.03

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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.