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Finding the Fourth Proportional to 220,030.11, 303,642.14 and 119,428.11

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Solution

The fourth proportional to 220,030.11, 303,642.14 and 119,428.11 is: 164,811.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,030.11 : 303,642.14 = 119,428.11 : x
  2. Step 2: Convert to fraction form
    220,030.11/303,642.14 = 119,428.11/x
  3. Step 3: Cross multiply
    220,030.11x = 303,642.14 × 119,428.11
  4. Step 4: Simplify right side
    220,030.11x = 36,263,406,299.41
  5. Step 5: Solve for x
    x = 36,263,406,299.41/220,030.11
  6. Step 6: Final answer
    x = 164,811.11

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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.