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Finding the Fourth Proportional to 547,734.49, 755,859.63 and 306,018.88

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Solution

The fourth proportional to 547,734.49, 755,859.63 and 306,018.88 is: 422,298.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,734.49 : 755,859.63 = 306,018.88 : x
  2. Step 2: Convert to fraction form
    547,734.49/755,859.63 = 306,018.88/x
  3. Step 3: Cross multiply
    547,734.49x = 755,859.63 × 306,018.88
  4. Step 4: Simplify right side
    547,734.49x = 231,307,316,667.74
  5. Step 5: Solve for x
    x = 231,307,316,667.74/547,734.49
  6. Step 6: Final answer
    x = 422,298.25

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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.