Home / 278,739.90-384,280.20-191,522.34

Finding the Fourth Proportional to 278,739.90, 384,280.20 and 191,522.34

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Solution

The fourth proportional to 278,739.90, 384,280.20 and 191,522.34 is: 264,039.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,739.90 : 384,280.20 = 191,522.34 : x
  2. Step 2: Convert to fraction form
    278,739.90/384,280.20 = 191,522.34/x
  3. Step 3: Cross multiply
    278,739.90x = 384,280.20 × 191,522.34
  4. Step 4: Simplify right side
    278,739.90x = 73,598,243,119.67
  5. Step 5: Solve for x
    x = 73,598,243,119.67/278,739.90
  6. Step 6: Final answer
    x = 264,039.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.