Home / 305,589.45-458,548.20-128,114.40

Finding the Fourth Proportional to 305,589.45, 458,548.20 and 128,114.40

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Solution

The fourth proportional to 305,589.45, 458,548.20 and 128,114.40 is: 192,240.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,589.45 : 458,548.20 = 128,114.40 : x
  2. Step 2: Convert to fraction form
    305,589.45/458,548.20 = 128,114.40/x
  3. Step 3: Cross multiply
    305,589.45x = 458,548.20 × 128,114.40
  4. Step 4: Simplify right side
    305,589.45x = 58,746,627,514.08
  5. Step 5: Solve for x
    x = 58,746,627,514.08/305,589.45
  6. Step 6: Final answer
    x = 192,240.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.