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Finding the Fourth Proportional to 213,635.21, 320,030.12 and 173,698.76

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Solution

The fourth proportional to 213,635.21, 320,030.12 and 173,698.76 is: 260,204.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,635.21 : 320,030.12 = 173,698.76 : x
  2. Step 2: Convert to fraction form
    213,635.21/320,030.12 = 173,698.76/x
  3. Step 3: Cross multiply
    213,635.21x = 320,030.12 × 173,698.76
  4. Step 4: Simplify right side
    213,635.21x = 55,588,836,240.97
  5. Step 5: Solve for x
    x = 55,588,836,240.97/213,635.21
  6. Step 6: Final answer
    x = 260,204.47

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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.