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Finding the Fourth Proportional to 300,539.16, 450,852.70 and 90,193.72

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Solution

The fourth proportional to 300,539.16, 450,852.70 and 90,193.72 is: 135,303.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,539.16 : 450,852.70 = 90,193.72 : x
  2. Step 2: Convert to fraction form
    300,539.16/450,852.70 = 90,193.72/x
  3. Step 3: Cross multiply
    300,539.16x = 450,852.70 × 90,193.72
  4. Step 4: Simplify right side
    300,539.16x = 40,664,082,185.04
  5. Step 5: Solve for x
    x = 40,664,082,185.04/300,539.16
  6. Step 6: Final answer
    x = 135,303.77

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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.