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Finding the Fourth Proportional to 317,906.94, 439,099.70 and 237,690.21

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Solution

The fourth proportional to 317,906.94, 439,099.70 and 237,690.21 is: 328,302.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,906.94 : 439,099.70 = 237,690.21 : x
  2. Step 2: Convert to fraction form
    317,906.94/439,099.70 = 237,690.21/x
  3. Step 3: Cross multiply
    317,906.94x = 439,099.70 × 237,690.21
  4. Step 4: Simplify right side
    317,906.94x = 104,369,698,715.49
  5. Step 5: Solve for x
    x = 104,369,698,715.49/317,906.94
  6. Step 6: Final answer
    x = 328,302.67

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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.