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Finding the Fourth Proportional to 213,626.70, 320,440.05 and 103,034.70

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Solution

The fourth proportional to 213,626.70, 320,440.05 and 103,034.70 is: 154,552.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,626.70 : 320,440.05 = 103,034.70 : x
  2. Step 2: Convert to fraction form
    213,626.70/320,440.05 = 103,034.70/x
  3. Step 3: Cross multiply
    213,626.70x = 320,440.05 × 103,034.70
  4. Step 4: Simplify right side
    213,626.70x = 33,016,444,419.74
  5. Step 5: Solve for x
    x = 33,016,444,419.74/213,626.70
  6. Step 6: Final answer
    x = 154,552.05

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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.