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Finding the Fourth Proportional to 547,031.88, 754,894.08 and 305,310.06

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Solution

The fourth proportional to 547,031.88, 754,894.08 and 305,310.06 is: 421,322.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,031.88 : 754,894.08 = 305,310.06 : x
  2. Step 2: Convert to fraction form
    547,031.88/754,894.08 = 305,310.06/x
  3. Step 3: Cross multiply
    547,031.88x = 754,894.08 × 305,310.06
  4. Step 4: Simplify right side
    547,031.88x = 230,476,756,858.45
  5. Step 5: Solve for x
    x = 230,476,756,858.45/547,031.88
  6. Step 6: Final answer
    x = 421,322.35

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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.