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Finding the Fourth Proportional to 478,163.50, 659,865.63 and 263,303.05

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Solution

The fourth proportional to 478,163.50, 659,865.63 and 263,303.05 is: 363,358.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,163.50 : 659,865.63 = 263,303.05 : x
  2. Step 2: Convert to fraction form
    478,163.50/659,865.63 = 263,303.05/x
  3. Step 3: Cross multiply
    478,163.50x = 659,865.63 × 263,303.05
  4. Step 4: Simplify right side
    478,163.50x = 173,744,634,618.84
  5. Step 5: Solve for x
    x = 173,744,634,618.84/478,163.50
  6. Step 6: Final answer
    x = 363,358.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.