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Finding the Fourth Proportional to 383,560.74, 529,320.78 and 213,776.64

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Solution

The fourth proportional to 383,560.74, 529,320.78 and 213,776.64 is: 295,015.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,560.74 : 529,320.78 = 213,776.64 : x
  2. Step 2: Convert to fraction form
    383,560.74/529,320.78 = 213,776.64/x
  3. Step 3: Cross multiply
    383,560.74x = 529,320.78 × 213,776.64
  4. Step 4: Simplify right side
    383,560.74x = 113,156,417,830.58
  5. Step 5: Solve for x
    x = 113,156,417,830.58/383,560.74
  6. Step 6: Final answer
    x = 295,015.64

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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.