Home / 377,078.13-520,220.58-215,847.02

Finding the Fourth Proportional to 377,078.13, 520,220.58 and 215,847.02

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Solution

The fourth proportional to 377,078.13, 520,220.58 and 215,847.02 is: 297,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,078.13 : 520,220.58 = 215,847.02 : x
  2. Step 2: Convert to fraction form
    377,078.13/520,220.58 = 215,847.02/x
  3. Step 3: Cross multiply
    377,078.13x = 520,220.58 × 215,847.02
  4. Step 4: Simplify right side
    377,078.13x = 112,288,059,334.57
  5. Step 5: Solve for x
    x = 112,288,059,334.57/377,078.13
  6. Step 6: Final answer
    x = 297,784.60

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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.