Home / 213,612.30-320,436.68-55,840.50

Finding the Fourth Proportional to 213,612.30, 320,436.68 and 55,840.50

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Solution

The fourth proportional to 213,612.30, 320,436.68 and 55,840.50 is: 83,765.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,612.30 : 320,436.68 = 55,840.50 : x
  2. Step 2: Convert to fraction form
    213,612.30/320,436.68 = 55,840.50/x
  3. Step 3: Cross multiply
    213,612.30x = 320,436.68 × 55,840.50
  4. Step 4: Simplify right side
    213,612.30x = 17,893,344,150.34
  5. Step 5: Solve for x
    x = 17,893,344,150.34/213,612.30
  6. Step 6: Final answer
    x = 83,765.51

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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.