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Finding the Fourth Proportional to 300,078.56, 450,050.88 and 89,689.16

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Solution

The fourth proportional to 300,078.56, 450,050.88 and 89,689.16 is: 134,513.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,078.56 : 450,050.88 = 89,689.16 : x
  2. Step 2: Convert to fraction form
    300,078.56/450,050.88 = 89,689.16/x
  3. Step 3: Cross multiply
    300,078.56x = 450,050.88 × 89,689.16
  4. Step 4: Simplify right side
    300,078.56x = 40,364,685,384.46
  5. Step 5: Solve for x
    x = 40,364,685,384.46/300,078.56
  6. Step 6: Final answer
    x = 134,513.73

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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.