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Finding the Fourth Proportional to 208,010.80, 312,323.40 and 161,316.40

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Solution

The fourth proportional to 208,010.80, 312,323.40 and 161,316.40 is: 242,212.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,010.80 : 312,323.40 = 161,316.40 : x
  2. Step 2: Convert to fraction form
    208,010.80/312,323.40 = 161,316.40/x
  3. Step 3: Cross multiply
    208,010.80x = 312,323.40 × 161,316.40
  4. Step 4: Simplify right side
    208,010.80x = 50,382,886,523.76
  5. Step 5: Solve for x
    x = 50,382,886,523.76/208,010.80
  6. Step 6: Final answer
    x = 242,212.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.