Home / 312,138.23-430,749.37-168,900.80

Finding the Fourth Proportional to 312,138.23, 430,749.37 and 168,900.80

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Solution

The fourth proportional to 312,138.23, 430,749.37 and 168,900.80 is: 233,082.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,138.23 : 430,749.37 = 168,900.80 : x
  2. Step 2: Convert to fraction form
    312,138.23/430,749.37 = 168,900.80/x
  3. Step 3: Cross multiply
    312,138.23x = 430,749.37 × 168,900.80
  4. Step 4: Simplify right side
    312,138.23x = 72,753,913,192.50
  5. Step 5: Solve for x
    x = 72,753,913,192.50/312,138.23
  6. Step 6: Final answer
    x = 233,082.35

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1.5x scale

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.