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Finding the Fourth Proportional to 548,280.80, 822,421.20 and 193,695.20

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Solution

The fourth proportional to 548,280.80, 822,421.20 and 193,695.20 is: 290,542.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,280.80 : 822,421.20 = 193,695.20 : x
  2. Step 2: Convert to fraction form
    548,280.80/822,421.20 = 193,695.20/x
  3. Step 3: Cross multiply
    548,280.80x = 822,421.20 × 193,695.20
  4. Step 4: Simplify right side
    548,280.80x = 159,299,038,818.24
  5. Step 5: Solve for x
    x = 159,299,038,818.24/548,280.80
  6. Step 6: Final answer
    x = 290,542.80

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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.