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Finding the Fourth Proportional to 547,921.16, 756,133.98 and 306,207.77

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Solution

The fourth proportional to 547,921.16, 756,133.98 and 306,207.77 is: 422,568.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,921.16 : 756,133.98 = 306,207.77 : x
  2. Step 2: Convert to fraction form
    547,921.16/756,133.98 = 306,207.77/x
  3. Step 3: Cross multiply
    547,921.16x = 756,133.98 × 306,207.77
  4. Step 4: Simplify right side
    547,921.16x = 231,534,096,056.36
  5. Step 5: Solve for x
    x = 231,534,096,056.36/547,921.16
  6. Step 6: Final answer
    x = 422,568.27

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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.