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Finding the Fourth Proportional to 503,142.80, 754,692.60 and 170,718.80

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Solution

The fourth proportional to 503,142.80, 754,692.60 and 170,718.80 is: 256,070.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,142.80 : 754,692.60 = 170,718.80 : x
  2. Step 2: Convert to fraction form
    503,142.80/754,692.60 = 170,718.80/x
  3. Step 3: Cross multiply
    503,142.80x = 754,692.60 × 170,718.80
  4. Step 4: Simplify right side
    503,142.80x = 128,840,215,040.88
  5. Step 5: Solve for x
    x = 128,840,215,040.88/503,142.80
  6. Step 6: Final answer
    x = 256,070.87

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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.