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Finding the Fourth Proportional to 478,130.58, 659,834.72 and 263,278.33

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Solution

The fourth proportional to 478,130.58, 659,834.72 and 263,278.33 is: 363,332.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,130.58 : 659,834.72 = 263,278.33 : x
  2. Step 2: Convert to fraction form
    478,130.58/659,834.72 = 263,278.33/x
  3. Step 3: Cross multiply
    478,130.58x = 659,834.72 × 263,278.33
  4. Step 4: Simplify right side
    478,130.58x = 173,720,183,157.62
  5. Step 5: Solve for x
    x = 173,720,183,157.62/478,130.58
  6. Step 6: Final answer
    x = 363,332.09

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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.