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Finding the Fourth Proportional to 383,086.48, 528,660.12 and 213,326.68

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Solution

The fourth proportional to 383,086.48, 528,660.12 and 213,326.68 is: 294,391.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,086.48 : 528,660.12 = 213,326.68 : x
  2. Step 2: Convert to fraction form
    383,086.48/528,660.12 = 213,326.68/x
  3. Step 3: Cross multiply
    383,086.48x = 528,660.12 × 213,326.68
  4. Step 4: Simplify right side
    383,086.48x = 112,777,308,248.00
  5. Step 5: Solve for x
    x = 112,777,308,248.00/383,086.48
  6. Step 6: Final answer
    x = 294,391.25

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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.