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Finding the Fourth Proportional to 311,790.56, 430,275.12 and 184,462.88

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Solution

The fourth proportional to 311,790.56, 430,275.12 and 184,462.88 is: 254,561.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,790.56 : 430,275.12 = 184,462.88 : x
  2. Step 2: Convert to fraction form
    311,790.56/430,275.12 = 184,462.88/x
  3. Step 3: Cross multiply
    311,790.56x = 430,275.12 × 184,462.88
  4. Step 4: Simplify right side
    311,790.56x = 79,369,787,827.55
  5. Step 5: Solve for x
    x = 79,369,787,827.55/311,790.56
  6. Step 6: Final answer
    x = 254,561.23

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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.