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Finding the Fourth Proportional to 317,278.42, 437,783.64 and 181,355.46

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Solution

The fourth proportional to 317,278.42, 437,783.64 and 181,355.46 is: 250,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,278.42 : 437,783.64 = 181,355.46 : x
  2. Step 2: Convert to fraction form
    317,278.42/437,783.64 = 181,355.46/x
  3. Step 3: Cross multiply
    317,278.42x = 437,783.64 × 181,355.46
  4. Step 4: Simplify right side
    317,278.42x = 79,394,451,090.90
  5. Step 5: Solve for x
    x = 79,394,451,090.90/317,278.42
  6. Step 6: Final answer
    x = 250,235.90

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1.5x scale

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.