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Finding the Fourth Proportional to 306,211.86, 459,257.63 and 291,021.62

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Solution

The fourth proportional to 306,211.86, 459,257.63 and 291,021.62 is: 436,475.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,211.86 : 459,257.63 = 291,021.62 : x
  2. Step 2: Convert to fraction form
    306,211.86/459,257.63 = 291,021.62/x
  3. Step 3: Cross multiply
    306,211.86x = 459,257.63 × 291,021.62
  4. Step 4: Simplify right side
    306,211.86x = 133,653,895,728.56
  5. Step 5: Solve for x
    x = 133,653,895,728.56/306,211.86
  6. Step 6: Final answer
    x = 436,475.24

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1.5x scale

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.