Home / 305,899.96-458,827.26-128,399.80

Finding the Fourth Proportional to 305,899.96, 458,827.26 and 128,399.80

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Solution

The fourth proportional to 305,899.96, 458,827.26 and 128,399.80 is: 192,590.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,899.96 : 458,827.26 = 128,399.80 : x
  2. Step 2: Convert to fraction form
    305,899.96/458,827.26 = 128,399.80/x
  3. Step 3: Cross multiply
    305,899.96x = 458,827.26 × 128,399.80
  4. Step 4: Simplify right side
    305,899.96x = 58,913,328,418.55
  5. Step 5: Solve for x
    x = 58,913,328,418.55/305,899.96
  6. Step 6: Final answer
    x = 192,590.18

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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.