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Finding the Fourth Proportional to 457,075.54, 686,055.57 and 220,584.70

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Solution

The fourth proportional to 457,075.54, 686,055.57 and 220,584.70 is: 331,090.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,075.54 : 686,055.57 = 220,584.70 : x
  2. Step 2: Convert to fraction form
    457,075.54/686,055.57 = 220,584.70/x
  3. Step 3: Cross multiply
    457,075.54x = 686,055.57 × 220,584.70
  4. Step 4: Simplify right side
    457,075.54x = 151,333,362,091.78
  5. Step 5: Solve for x
    x = 151,333,362,091.78/457,075.54
  6. Step 6: Final answer
    x = 331,090.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.