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Finding the Fourth Proportional to 210,965.68, 316,372.38 and 70,692.04

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Solution

The fourth proportional to 210,965.68, 316,372.38 and 70,692.04 is: 106,012.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,965.68 : 316,372.38 = 70,692.04 : x
  2. Step 2: Convert to fraction form
    210,965.68/316,372.38 = 70,692.04/x
  3. Step 3: Cross multiply
    210,965.68x = 316,372.38 × 70,692.04
  4. Step 4: Simplify right side
    210,965.68x = 22,365,008,941.86
  5. Step 5: Solve for x
    x = 22,365,008,941.86/210,965.68
  6. Step 6: Final answer
    x = 106,012.55

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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.