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Finding the Fourth Proportional to 303,980.62, 455,978.70 and 144,019.08

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Solution

The fourth proportional to 303,980.62, 455,978.70 and 144,019.08 is: 216,032.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,980.62 : 455,978.70 = 144,019.08 : x
  2. Step 2: Convert to fraction form
    303,980.62/455,978.70 = 144,019.08/x
  3. Step 3: Cross multiply
    303,980.62x = 455,978.70 × 144,019.08
  4. Step 4: Simplify right side
    303,980.62x = 65,669,632,873.60
  5. Step 5: Solve for x
    x = 65,669,632,873.60/303,980.62
  6. Step 6: Final answer
    x = 216,032.30

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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.