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Finding the Fourth Proportional to 306,862.65, 459,861.98 and 243,790.65

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Solution

The fourth proportional to 306,862.65, 459,861.98 and 243,790.65 is: 365,342.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,862.65 : 459,861.98 = 243,790.65 : x
  2. Step 2: Convert to fraction form
    306,862.65/459,861.98 = 243,790.65/x
  3. Step 3: Cross multiply
    306,862.65x = 459,861.98 × 243,790.65
  4. Step 4: Simplify right side
    306,862.65x = 112,110,049,795.53
  5. Step 5: Solve for x
    x = 112,110,049,795.53/306,862.65
  6. Step 6: Final answer
    x = 365,342.77

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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.