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Finding the Fourth Proportional to 258,431.80, 388,511.70 and 224,217.40

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Solution

The fourth proportional to 258,431.80, 388,511.70 and 224,217.40 is: 337,075.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,431.80 : 388,511.70 = 224,217.40 : x
  2. Step 2: Convert to fraction form
    258,431.80/388,511.70 = 224,217.40/x
  3. Step 3: Cross multiply
    258,431.80x = 388,511.70 × 224,217.40
  4. Step 4: Simplify right side
    258,431.80x = 87,111,083,243.58
  5. Step 5: Solve for x
    x = 87,111,083,243.58/258,431.80
  6. Step 6: Final answer
    x = 337,075.71

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1.5x scale

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.