Home / 257,755.20-355,692.83-143,038.85

Finding the Fourth Proportional to 257,755.20, 355,692.83 and 143,038.85

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Solution

The fourth proportional to 257,755.20, 355,692.83 and 143,038.85 is: 197,388.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,755.20 : 355,692.83 = 143,038.85 : x
  2. Step 2: Convert to fraction form
    257,755.20/355,692.83 = 143,038.85/x
  3. Step 3: Cross multiply
    257,755.20x = 355,692.83 × 143,038.85
  4. Step 4: Simplify right side
    257,755.20x = 50,877,894,603.27
  5. Step 5: Solve for x
    x = 50,877,894,603.27/257,755.20
  6. Step 6: Final answer
    x = 197,388.43

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1.5x scale

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.