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Finding the Fourth Proportional to 201,903.16, 278,628.23 and 111,262.37

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Solution

The fourth proportional to 201,903.16, 278,628.23 and 111,262.37 is: 153,543.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,903.16 : 278,628.23 = 111,262.37 : x
  2. Step 2: Convert to fraction form
    201,903.16/278,628.23 = 111,262.37/x
  3. Step 3: Cross multiply
    201,903.16x = 278,628.23 × 111,262.37
  4. Step 4: Simplify right side
    201,903.16x = 31,000,837,220.34
  5. Step 5: Solve for x
    x = 31,000,837,220.34/201,903.16
  6. Step 6: Final answer
    x = 153,543.10

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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.