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Finding the Fourth Proportional to 306,713.42, 459,457.50 and 243,640.34

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Solution

The fourth proportional to 306,713.42, 459,457.50 and 243,640.34 is: 364,973.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,713.42 : 459,457.50 = 243,640.34 : x
  2. Step 2: Convert to fraction form
    306,713.42/459,457.50 = 243,640.34/x
  3. Step 3: Cross multiply
    306,713.42x = 459,457.50 × 243,640.34
  4. Step 4: Simplify right side
    306,713.42x = 111,942,381,515.55
  5. Step 5: Solve for x
    x = 111,942,381,515.55/306,713.42
  6. Step 6: Final answer
    x = 364,973.86

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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.