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Finding the Fourth Proportional to 301,021.92, 451,526.40 and 90,655.20

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Solution

The fourth proportional to 301,021.92, 451,526.40 and 90,655.20 is: 135,980.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,021.92 : 451,526.40 = 90,655.20 : x
  2. Step 2: Convert to fraction form
    301,021.92/451,526.40 = 90,655.20/x
  3. Step 3: Cross multiply
    301,021.92x = 451,526.40 × 90,655.20
  4. Step 4: Simplify right side
    301,021.92x = 40,933,216,097.28
  5. Step 5: Solve for x
    x = 40,933,216,097.28/301,021.92
  6. Step 6: Final answer
    x = 135,980.85

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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.