Home / 312,225.76-430,868.16-168,982.72

Finding the Fourth Proportional to 312,225.76, 430,868.16 and 168,982.72

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Solution

The fourth proportional to 312,225.76, 430,868.16 and 168,982.72 is: 233,194.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,225.76 : 430,868.16 = 168,982.72 : x
  2. Step 2: Convert to fraction form
    312,225.76/430,868.16 = 168,982.72/x
  3. Step 3: Cross multiply
    312,225.76x = 430,868.16 × 168,982.72
  4. Step 4: Simplify right side
    312,225.76x = 72,809,273,638.20
  5. Step 5: Solve for x
    x = 72,809,273,638.20/312,225.76
  6. Step 6: Final answer
    x = 233,194.32

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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.