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Finding the Fourth Proportional to 316,003.44, 436,084.72 and 172,763.45

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Solution

The fourth proportional to 316,003.44, 436,084.72 and 172,763.45 is: 238,413.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,003.44 : 436,084.72 = 172,763.45 : x
  2. Step 2: Convert to fraction form
    316,003.44/436,084.72 = 172,763.45/x
  3. Step 3: Cross multiply
    316,003.44x = 436,084.72 × 172,763.45
  4. Step 4: Simplify right side
    316,003.44x = 75,339,500,719.48
  5. Step 5: Solve for x
    x = 75,339,500,719.48/316,003.44
  6. Step 6: Final answer
    x = 238,413.55

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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.