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Finding the Fourth Proportional to 274,669.90, 412,004.85 and 255,424.30

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Solution

The fourth proportional to 274,669.90, 412,004.85 and 255,424.30 is: 383,136.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,669.90 : 412,004.85 = 255,424.30 : x
  2. Step 2: Convert to fraction form
    274,669.90/412,004.85 = 255,424.30/x
  3. Step 3: Cross multiply
    274,669.90x = 412,004.85 × 255,424.30
  4. Step 4: Simplify right side
    274,669.90x = 105,236,050,407.86
  5. Step 5: Solve for x
    x = 105,236,050,407.86/274,669.90
  6. Step 6: Final answer
    x = 383,136.45

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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.