Home / 485,623.60-728,176.20-204,823.60

Finding the Fourth Proportional to 485,623.60, 728,176.20 and 204,823.60

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Solution

The fourth proportional to 485,623.60, 728,176.20 and 204,823.60 is: 307,126.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,623.60 : 728,176.20 = 204,823.60 : x
  2. Step 2: Convert to fraction form
    485,623.60/728,176.20 = 204,823.60/x
  3. Step 3: Cross multiply
    485,623.60x = 728,176.20 × 204,823.60
  4. Step 4: Simplify right side
    485,623.60x = 149,147,670,718.32
  5. Step 5: Solve for x
    x = 149,147,670,718.32/485,623.60
  6. Step 6: Final answer
    x = 307,126.08

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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.