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Finding the Fourth Proportional to 323,529.20, 485,293.80 and 98,889.20

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Solution

The fourth proportional to 323,529.20, 485,293.80 and 98,889.20 is: 148,333.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,529.20 : 485,293.80 = 98,889.20 : x
  2. Step 2: Convert to fraction form
    323,529.20/485,293.80 = 98,889.20/x
  3. Step 3: Cross multiply
    323,529.20x = 485,293.80 × 98,889.20
  4. Step 4: Simplify right side
    323,529.20x = 47,990,315,646.96
  5. Step 5: Solve for x
    x = 47,990,315,646.96/323,529.20
  6. Step 6: Final answer
    x = 148,333.80

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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.