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Finding the Fourth Proportional to 547,054.98, 754,905.16 and 305,353.13

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Solution

The fourth proportional to 547,054.98, 754,905.16 and 305,353.13 is: 421,370.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,054.98 : 754,905.16 = 305,353.13 : x
  2. Step 2: Convert to fraction form
    547,054.98/754,905.16 = 305,353.13/x
  3. Step 3: Cross multiply
    547,054.98x = 754,905.16 × 305,353.13
  4. Step 4: Simplify right side
    547,054.98x = 230,512,655,908.35
  5. Step 5: Solve for x
    x = 230,512,655,908.35/547,054.98
  6. Step 6: Final answer
    x = 421,370.18

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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.