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Finding the Fourth Proportional to 321,008.10, 481,512.15 and 163,544.10

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Solution

The fourth proportional to 321,008.10, 481,512.15 and 163,544.10 is: 245,316.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,008.10 : 481,512.15 = 163,544.10 : x
  2. Step 2: Convert to fraction form
    321,008.10/481,512.15 = 163,544.10/x
  3. Step 3: Cross multiply
    321,008.10x = 481,512.15 × 163,544.10
  4. Step 4: Simplify right side
    321,008.10x = 78,748,471,210.82
  5. Step 5: Solve for x
    x = 78,748,471,210.82/321,008.10
  6. Step 6: Final answer
    x = 245,316.15

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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.