Home / 390,520.44-539,032.77-227,215.35

Finding the Fourth Proportional to 390,520.44, 539,032.77 and 227,215.35

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Solution

The fourth proportional to 390,520.44, 539,032.77 and 227,215.35 is: 313,623.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,520.44 : 539,032.77 = 227,215.35 : x
  2. Step 2: Convert to fraction form
    390,520.44/539,032.77 = 227,215.35/x
  3. Step 3: Cross multiply
    390,520.44x = 539,032.77 × 227,215.35
  4. Step 4: Simplify right side
    390,520.44x = 122,476,519,497.02
  5. Step 5: Solve for x
    x = 122,476,519,497.02/390,520.44
  6. Step 6: Final answer
    x = 313,623.84

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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.