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Finding the Fourth Proportional to 316,515.89, 436,826.77 and 201,798.69

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Solution

The fourth proportional to 316,515.89, 436,826.77 and 201,798.69 is: 278,504.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,515.89 : 436,826.77 = 201,798.69 : x
  2. Step 2: Convert to fraction form
    316,515.89/436,826.77 = 201,798.69/x
  3. Step 3: Cross multiply
    316,515.89x = 436,826.77 × 201,798.69
  4. Step 4: Simplify right side
    316,515.89x = 88,151,069,438.43
  5. Step 5: Solve for x
    x = 88,151,069,438.43/316,515.89
  6. Step 6: Final answer
    x = 278,504.41

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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.