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Finding the Fourth Proportional to 316,455.57, 436,709.16 and 173,224.67

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Solution

The fourth proportional to 316,455.57, 436,709.16 and 173,224.67 is: 239,050.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,455.57 : 436,709.16 = 173,224.67 : x
  2. Step 2: Convert to fraction form
    316,455.57/436,709.16 = 173,224.67/x
  3. Step 3: Cross multiply
    316,455.57x = 436,709.16 × 173,224.67
  4. Step 4: Simplify right side
    316,455.57x = 75,648,797,943.43
  5. Step 5: Solve for x
    x = 75,648,797,943.43/316,455.57
  6. Step 6: Final answer
    x = 239,050.30

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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.