Home / 421,916.55-582,240.72-228,320.12

Finding the Fourth Proportional to 421,916.55, 582,240.72 and 228,320.12

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Solution

The fourth proportional to 421,916.55, 582,240.72 and 228,320.12 is: 315,079.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,916.55 : 582,240.72 = 228,320.12 : x
  2. Step 2: Convert to fraction form
    421,916.55/582,240.72 = 228,320.12/x
  3. Step 3: Cross multiply
    421,916.55x = 582,240.72 × 228,320.12
  4. Step 4: Simplify right side
    421,916.55x = 132,937,268,169.53
  5. Step 5: Solve for x
    x = 132,937,268,169.53/421,916.55
  6. Step 6: Final answer
    x = 315,079.53

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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.