Home / 390,522.12-539,035.11-227,217.05

Finding the Fourth Proportional to 390,522.12, 539,035.11 and 227,217.05

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Solution

The fourth proportional to 390,522.12, 539,035.11 and 227,217.05 is: 313,626.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,522.12 : 539,035.11 = 227,217.05 : x
  2. Step 2: Convert to fraction form
    390,522.12/539,035.11 = 227,217.05/x
  3. Step 3: Cross multiply
    390,522.12x = 539,035.11 × 227,217.05
  4. Step 4: Simplify right side
    390,522.12x = 122,477,964,845.45
  5. Step 5: Solve for x
    x = 122,477,964,845.45/390,522.12
  6. Step 6: Final answer
    x = 313,626.19

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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.