Home / 305,499.20-458,428-127,992.64

Finding the Fourth Proportional to 305,499.20, 458,428 and 127,992.64

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Solution

The fourth proportional to 305,499.20, 458,428 and 127,992.64 is: 192,064.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,499.20 : 458,428 = 127,992.64 : x
  2. Step 2: Convert to fraction form
    305,499.20/458,428 = 127,992.64/x
  3. Step 3: Cross multiply
    305,499.20x = 458,428 × 127,992.64
  4. Step 4: Simplify right side
    305,499.20x = 58,675,409,969.92
  5. Step 5: Solve for x
    x = 58,675,409,969.92/305,499.20
  6. Step 6: Final answer
    x = 192,064.04

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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.