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Finding the Fourth Proportional to 312,036.75, 430,608.15 and 168,797.16

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Solution

The fourth proportional to 312,036.75, 430,608.15 and 168,797.16 is: 232,938.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,036.75 : 430,608.15 = 168,797.16 : x
  2. Step 2: Convert to fraction form
    312,036.75/430,608.15 = 168,797.16/x
  3. Step 3: Cross multiply
    312,036.75x = 430,608.15 × 168,797.16
  4. Step 4: Simplify right side
    312,036.75x = 72,685,432,792.85
  5. Step 5: Solve for x
    x = 72,685,432,792.85/312,036.75
  6. Step 6: Final answer
    x = 232,938.69

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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.