Home / 315,429.18-470,729.87-281,771.24

Finding the Fourth Proportional to 315,429.18, 470,729.87 and 281,771.24

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Solution

The fourth proportional to 315,429.18, 470,729.87 and 281,771.24 is: 420,500.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,429.18 : 470,729.87 = 281,771.24 : x
  2. Step 2: Convert to fraction form
    315,429.18/470,729.87 = 281,771.24/x
  3. Step 3: Cross multiply
    315,429.18x = 470,729.87 × 281,771.24
  4. Step 4: Simplify right side
    315,429.18x = 132,638,139,174.94
  5. Step 5: Solve for x
    x = 132,638,139,174.94/315,429.18
  6. Step 6: Final answer
    x = 420,500.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.