Home / 421,464.20-632,196.30-221,707.40

Finding the Fourth Proportional to 421,464.20, 632,196.30 and 221,707.40

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Solution

The fourth proportional to 421,464.20, 632,196.30 and 221,707.40 is: 332,561.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,464.20 : 632,196.30 = 221,707.40 : x
  2. Step 2: Convert to fraction form
    421,464.20/632,196.30 = 221,707.40/x
  3. Step 3: Cross multiply
    421,464.20x = 632,196.30 × 221,707.40
  4. Step 4: Simplify right side
    421,464.20x = 140,162,597,962.62
  5. Step 5: Solve for x
    x = 140,162,597,962.62/421,464.20
  6. Step 6: Final answer
    x = 332,561.10

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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.