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Finding the Fourth Proportional to 345,980.16, 477,183.96 and 218,609.28

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Solution

The fourth proportional to 345,980.16, 477,183.96 and 218,609.28 is: 301,511.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,980.16 : 477,183.96 = 218,609.28 : x
  2. Step 2: Convert to fraction form
    345,980.16/477,183.96 = 218,609.28/x
  3. Step 3: Cross multiply
    345,980.16x = 477,183.96 × 218,609.28
  4. Step 4: Simplify right side
    345,980.16x = 104,316,841,923.15
  5. Step 5: Solve for x
    x = 104,316,841,923.15/345,980.16
  6. Step 6: Final answer
    x = 301,511.05

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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.