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Finding the Fourth Proportional to 321,002.10, 481,503.15 and 163,538.10

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Solution

The fourth proportional to 321,002.10, 481,503.15 and 163,538.10 is: 245,307.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,002.10 : 481,503.15 = 163,538.10 : x
  2. Step 2: Convert to fraction form
    321,002.10/481,503.15 = 163,538.10/x
  3. Step 3: Cross multiply
    321,002.10x = 481,503.15 × 163,538.10
  4. Step 4: Simplify right side
    321,002.10x = 78,744,110,295.02
  5. Step 5: Solve for x
    x = 78,744,110,295.02/321,002.10
  6. Step 6: Final answer
    x = 245,307.15

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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.