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Finding the Fourth Proportional to 291,626.79, 437,612.40 and 123,136.20

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Solution

The fourth proportional to 291,626.79, 437,612.40 and 123,136.20 is: 184,777.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,626.79 : 437,612.40 = 123,136.20 : x
  2. Step 2: Convert to fraction form
    291,626.79/437,612.40 = 123,136.20/x
  3. Step 3: Cross multiply
    291,626.79x = 437,612.40 × 123,136.20
  4. Step 4: Simplify right side
    291,626.79x = 53,885,928,008.88
  5. Step 5: Solve for x
    x = 53,885,928,008.88/291,626.79
  6. Step 6: Final answer
    x = 184,777.02

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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.