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Finding the Fourth Proportional to 547,041.88, 754,907.88 and 305,320.06

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Solution

The fourth proportional to 547,041.88, 754,907.88 and 305,320.06 is: 421,336.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,041.88 : 754,907.88 = 305,320.06 : x
  2. Step 2: Convert to fraction form
    547,041.88/754,907.88 = 305,320.06/x
  3. Step 3: Cross multiply
    547,041.88x = 754,907.88 × 305,320.06
  4. Step 4: Simplify right side
    547,041.88x = 230,488,519,216.07
  5. Step 5: Solve for x
    x = 230,488,519,216.07/547,041.88
  6. Step 6: Final answer
    x = 421,336.15

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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.