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Finding the Fourth Proportional to 219,991.01, 303,430.77 and 201,900.02

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Solution

The fourth proportional to 219,991.01, 303,430.77 and 201,900.02 is: 278,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,991.01 : 303,430.77 = 201,900.02 : x
  2. Step 2: Convert to fraction form
    219,991.01/303,430.77 = 201,900.02/x
  3. Step 3: Cross multiply
    219,991.01x = 303,430.77 × 201,900.02
  4. Step 4: Simplify right side
    219,991.01x = 61,262,677,014.46
  5. Step 5: Solve for x
    x = 61,262,677,014.46/219,991.01
  6. Step 6: Final answer
    x = 278,478.10

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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.