Home / 278,038.11-383,709.15-157,190.64

Finding the Fourth Proportional to 278,038.11, 383,709.15 and 157,190.64

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Solution

The fourth proportional to 278,038.11, 383,709.15 and 157,190.64 is: 216,932.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,038.11 : 383,709.15 = 157,190.64 : x
  2. Step 2: Convert to fraction form
    278,038.11/383,709.15 = 157,190.64/x
  3. Step 3: Cross multiply
    278,038.11x = 383,709.15 × 157,190.64
  4. Step 4: Simplify right side
    278,038.11x = 60,315,486,862.36
  5. Step 5: Solve for x
    x = 60,315,486,862.36/278,038.11
  6. Step 6: Final answer
    x = 216,932.44

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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.