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Finding the Fourth Proportional to 547,848.64, 756,016.60 and 306,133.21

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Solution

The fourth proportional to 547,848.64, 756,016.60 and 306,133.21 is: 422,455.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,848.64 : 756,016.60 = 306,133.21 : x
  2. Step 2: Convert to fraction form
    547,848.64/756,016.60 = 306,133.21/x
  3. Step 3: Cross multiply
    547,848.64x = 756,016.60 × 306,133.21
  4. Step 4: Simplify right side
    547,848.64x = 231,441,788,571.29
  5. Step 5: Solve for x
    x = 231,441,788,571.29/547,848.64
  6. Step 6: Final answer
    x = 422,455.71

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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.