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Finding the Fourth Proportional to 321,973.20, 451,695.60 and 321,973.20

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Solution

The fourth proportional to 321,973.20, 451,695.60 and 321,973.20 is: 451,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,973.20 : 451,695.60 = 321,973.20 : x
  2. Step 2: Convert to fraction form
    321,973.20/451,695.60 = 321,973.20/x
  3. Step 3: Cross multiply
    321,973.20x = 451,695.60 × 321,973.20
  4. Step 4: Simplify right side
    321,973.20x = 145,433,877,757.92
  5. Step 5: Solve for x
    x = 145,433,877,757.92/321,973.20
  6. Step 6: Final answer
    x = 451,695.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.