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Finding the Fourth Proportional to 608,980.20, 913,383.90 and 188,298.60

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Solution

The fourth proportional to 608,980.20, 913,383.90 and 188,298.60 is: 282,421.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,980.20 : 913,383.90 = 188,298.60 : x
  2. Step 2: Convert to fraction form
    608,980.20/913,383.90 = 188,298.60/x
  3. Step 3: Cross multiply
    608,980.20x = 913,383.90 × 188,298.60
  4. Step 4: Simplify right side
    608,980.20x = 171,988,909,632.54
  5. Step 5: Solve for x
    x = 171,988,909,632.54/608,980.20
  6. Step 6: Final answer
    x = 282,421.18

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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.