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Finding the Fourth Proportional to 213,497.78, 320,235.12 and 108,314.04

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Solution

The fourth proportional to 213,497.78, 320,235.12 and 108,314.04 is: 162,465.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,497.78 : 320,235.12 = 108,314.04 : x
  2. Step 2: Convert to fraction form
    213,497.78/320,235.12 = 108,314.04/x
  3. Step 3: Cross multiply
    213,497.78x = 320,235.12 × 108,314.04
  4. Step 4: Simplify right side
    213,497.78x = 34,685,959,597.08
  5. Step 5: Solve for x
    x = 34,685,959,597.08/213,497.78
  6. Step 6: Final answer
    x = 162,465.20

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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.