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Finding the Fourth Proportional to 223,421.40, 335,132.10 and 221,866.20

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Solution

The fourth proportional to 223,421.40, 335,132.10 and 221,866.20 is: 332,799.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,421.40 : 335,132.10 = 221,866.20 : x
  2. Step 2: Convert to fraction form
    223,421.40/335,132.10 = 221,866.20/x
  3. Step 3: Cross multiply
    223,421.40x = 335,132.10 × 221,866.20
  4. Step 4: Simplify right side
    223,421.40x = 74,354,485,525.02
  5. Step 5: Solve for x
    x = 74,354,485,525.02/223,421.40
  6. Step 6: Final answer
    x = 332,799.30

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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.