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Finding the Fourth Proportional to 432,014.80, 648,022.20 and 219,438.40

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Solution

The fourth proportional to 432,014.80, 648,022.20 and 219,438.40 is: 329,157.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,014.80 : 648,022.20 = 219,438.40 : x
  2. Step 2: Convert to fraction form
    432,014.80/648,022.20 = 219,438.40/x
  3. Step 3: Cross multiply
    432,014.80x = 648,022.20 × 219,438.40
  4. Step 4: Simplify right side
    432,014.80x = 142,200,954,732.48
  5. Step 5: Solve for x
    x = 142,200,954,732.48/432,014.80
  6. Step 6: Final answer
    x = 329,157.60

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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.