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Finding the Fourth Proportional to 300,319.95, 450,347.09 and 89,918.67

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Solution

The fourth proportional to 300,319.95, 450,347.09 and 89,918.67 is: 134,838.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,319.95 : 450,347.09 = 89,918.67 : x
  2. Step 2: Convert to fraction form
    300,319.95/450,347.09 = 89,918.67/x
  3. Step 3: Cross multiply
    300,319.95x = 450,347.09 × 89,918.67
  4. Step 4: Simplify right side
    300,319.95x = 40,494,610,921.58
  5. Step 5: Solve for x
    x = 40,494,610,921.58/300,319.95
  6. Step 6: Final answer
    x = 134,838.23

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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.