Home / 213,868.80-320,803.20-147,513.60

Finding the Fourth Proportional to 213,868.80, 320,803.20 and 147,513.60

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Solution

The fourth proportional to 213,868.80, 320,803.20 and 147,513.60 is: 221,270.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,868.80 : 320,803.20 = 147,513.60 : x
  2. Step 2: Convert to fraction form
    213,868.80/320,803.20 = 147,513.60/x
  3. Step 3: Cross multiply
    213,868.80x = 320,803.20 × 147,513.60
  4. Step 4: Simplify right side
    213,868.80x = 47,322,834,923.52
  5. Step 5: Solve for x
    x = 47,322,834,923.52/213,868.80
  6. Step 6: Final answer
    x = 221,270.40

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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.