Home / 305,782.30-458,892.15-128,416.60

Finding the Fourth Proportional to 305,782.30, 458,892.15 and 128,416.60

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Solution

The fourth proportional to 305,782.30, 458,892.15 and 128,416.60 is: 192,716.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,782.30 : 458,892.15 = 128,416.60 : x
  2. Step 2: Convert to fraction form
    305,782.30/458,892.15 = 128,416.60/x
  3. Step 3: Cross multiply
    305,782.30x = 458,892.15 × 128,416.60
  4. Step 4: Simplify right side
    305,782.30x = 58,929,369,669.69
  5. Step 5: Solve for x
    x = 58,929,369,669.69/305,782.30
  6. Step 6: Final answer
    x = 192,716.75

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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.