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Finding the Fourth Proportional to 253,692.72, 350,089.02 and 138,970.80

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Solution

The fourth proportional to 253,692.72, 350,089.02 and 138,970.80 is: 191,775.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,692.72 : 350,089.02 = 138,970.80 : x
  2. Step 2: Convert to fraction form
    253,692.72/350,089.02 = 138,970.80/x
  3. Step 3: Cross multiply
    253,692.72x = 350,089.02 × 138,970.80
  4. Step 4: Simplify right side
    253,692.72x = 48,652,151,180.62
  5. Step 5: Solve for x
    x = 48,652,151,180.62/253,692.72
  6. Step 6: Final answer
    x = 191,775.91

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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.