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Finding the Fourth Proportional to 478,163.81, 659,866.06 and 263,303.36

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Solution

The fourth proportional to 478,163.81, 659,866.06 and 263,303.36 is: 363,358.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,163.81 : 659,866.06 = 263,303.36 : x
  2. Step 2: Convert to fraction form
    478,163.81/659,866.06 = 263,303.36/x
  3. Step 3: Cross multiply
    478,163.81x = 659,866.06 × 263,303.36
  4. Step 4: Simplify right side
    478,163.81x = 173,744,953,964.01
  5. Step 5: Solve for x
    x = 173,744,953,964.01/478,163.81
  6. Step 6: Final answer
    x = 363,358.64

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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.