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Finding the Fourth Proportional to 548,070.68, 821,545.68 and 310,912.40

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Solution

The fourth proportional to 548,070.68, 821,545.68 and 310,912.40 is: 466,050.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,070.68 : 821,545.68 = 310,912.40 : x
  2. Step 2: Convert to fraction form
    548,070.68/821,545.68 = 310,912.40/x
  3. Step 3: Cross multiply
    548,070.68x = 821,545.68 × 310,912.40
  4. Step 4: Simplify right side
    548,070.68x = 255,428,739,078.43
  5. Step 5: Solve for x
    x = 255,428,739,078.43/548,070.68
  6. Step 6: Final answer
    x = 466,050.73

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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.