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Finding the Fourth Proportional to 221,479.40, 332,219.10 and 162,430.40

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Solution

The fourth proportional to 221,479.40, 332,219.10 and 162,430.40 is: 243,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,479.40 : 332,219.10 = 162,430.40 : x
  2. Step 2: Convert to fraction form
    221,479.40/332,219.10 = 162,430.40/x
  3. Step 3: Cross multiply
    221,479.40x = 332,219.10 × 162,430.40
  4. Step 4: Simplify right side
    221,479.40x = 53,962,481,300.64
  5. Step 5: Solve for x
    x = 53,962,481,300.64/221,479.40
  6. Step 6: Final answer
    x = 243,645.60

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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.