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Finding the Fourth Proportional to 200,814.40, 301,048.80 and 102,318.40

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Solution

The fourth proportional to 200,814.40, 301,048.80 and 102,318.40 is: 153,389.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,814.40 : 301,048.80 = 102,318.40 : x
  2. Step 2: Convert to fraction form
    200,814.40/301,048.80 = 102,318.40/x
  3. Step 3: Cross multiply
    200,814.40x = 301,048.80 × 102,318.40
  4. Step 4: Simplify right side
    200,814.40x = 30,802,831,537.92
  5. Step 5: Solve for x
    x = 30,802,831,537.92/200,814.40
  6. Step 6: Final answer
    x = 153,389.56

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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.