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Finding the Fourth Proportional to 478,245.35, 659,970.54 and 263,405.42

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Solution

The fourth proportional to 478,245.35, 659,970.54 and 263,405.42 is: 363,495.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,245.35 : 659,970.54 = 263,405.42 : x
  2. Step 2: Convert to fraction form
    478,245.35/659,970.54 = 263,405.42/x
  3. Step 3: Cross multiply
    478,245.35x = 659,970.54 × 263,405.42
  4. Step 4: Simplify right side
    478,245.35x = 173,839,817,276.33
  5. Step 5: Solve for x
    x = 173,839,817,276.33/478,245.35
  6. Step 6: Final answer
    x = 363,495.05

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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.