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Finding the Fourth Proportional to 213,384.52, 320,277.60 and 108,278.92

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Solution

The fourth proportional to 213,384.52, 320,277.60 and 108,278.92 is: 162,520.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,384.52 : 320,277.60 = 108,278.92 : x
  2. Step 2: Convert to fraction form
    213,384.52/320,277.60 = 108,278.92/x
  3. Step 3: Cross multiply
    213,384.52x = 320,277.60 × 108,278.92
  4. Step 4: Simplify right side
    213,384.52x = 34,679,312,628.19
  5. Step 5: Solve for x
    x = 34,679,312,628.19/213,384.52
  6. Step 6: Final answer
    x = 162,520.28

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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.