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Finding the Fourth Proportional to 253,959.36, 380,604.78 and 141,692.40

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Solution

The fourth proportional to 253,959.36, 380,604.78 and 141,692.40 is: 212,352.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,959.36 : 380,604.78 = 141,692.40 : x
  2. Step 2: Convert to fraction form
    253,959.36/380,604.78 = 141,692.40/x
  3. Step 3: Cross multiply
    253,959.36x = 380,604.78 × 141,692.40
  4. Step 4: Simplify right side
    253,959.36x = 53,928,804,729.67
  5. Step 5: Solve for x
    x = 53,928,804,729.67/253,959.36
  6. Step 6: Final answer
    x = 212,352.11

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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.