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Finding the Fourth Proportional to 324,298.64, 486,458.90 and 87,643.38

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Solution

The fourth proportional to 324,298.64, 486,458.90 and 87,643.38 is: 131,468.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,298.64 : 486,458.90 = 87,643.38 : x
  2. Step 2: Convert to fraction form
    324,298.64/486,458.90 = 87,643.38/x
  3. Step 3: Cross multiply
    324,298.64x = 486,458.90 × 87,643.38
  4. Step 4: Simplify right side
    324,298.64x = 42,634,902,227.08
  5. Step 5: Solve for x
    x = 42,634,902,227.08/324,298.64
  6. Step 6: Final answer
    x = 131,468.03

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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.