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Finding the Fourth Proportional to 311,345.34, 429,667.11 and 184,129.98

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Solution

The fourth proportional to 311,345.34, 429,667.11 and 184,129.98 is: 254,105.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,345.34 : 429,667.11 = 184,129.98 : x
  2. Step 2: Convert to fraction form
    311,345.34/429,667.11 = 184,129.98/x
  3. Step 3: Cross multiply
    311,345.34x = 429,667.11 × 184,129.98
  4. Step 4: Simplify right side
    311,345.34x = 79,114,596,370.96
  5. Step 5: Solve for x
    x = 79,114,596,370.96/311,345.34
  6. Step 6: Final answer
    x = 254,105.61

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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.