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Finding the Fourth Proportional to 274,280.80, 411,421.20 and 263,783.20

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Solution

The fourth proportional to 274,280.80, 411,421.20 and 263,783.20 is: 395,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,280.80 : 411,421.20 = 263,783.20 : x
  2. Step 2: Convert to fraction form
    274,280.80/411,421.20 = 263,783.20/x
  3. Step 3: Cross multiply
    274,280.80x = 411,421.20 × 263,783.20
  4. Step 4: Simplify right side
    274,280.80x = 108,526,000,683.84
  5. Step 5: Solve for x
    x = 108,526,000,683.84/274,280.80
  6. Step 6: Final answer
    x = 395,674.80

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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.