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Finding the Fourth Proportional to 352,334.88, 486,308.52 and 216,401.40

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Solution

The fourth proportional to 352,334.88, 486,308.52 and 216,401.40 is: 298,686.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,334.88 : 486,308.52 = 216,401.40 : x
  2. Step 2: Convert to fraction form
    352,334.88/486,308.52 = 216,401.40/x
  3. Step 3: Cross multiply
    352,334.88x = 486,308.52 × 216,401.40
  4. Step 4: Simplify right side
    352,334.88x = 105,237,844,559.93
  5. Step 5: Solve for x
    x = 105,237,844,559.93/352,334.88
  6. Step 6: Final answer
    x = 298,686.99

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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.