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Finding the Fourth Proportional to 316,941, 437,378.58 and 189,621.96

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Solution

The fourth proportional to 316,941, 437,378.58 and 189,621.96 is: 261,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,941 : 437,378.58 = 189,621.96 : x
  2. Step 2: Convert to fraction form
    316,941/437,378.58 = 189,621.96/x
  3. Step 3: Cross multiply
    316,941x = 437,378.58 × 189,621.96
  4. Step 4: Simplify right side
    316,941x = 82,936,583,601.62
  5. Step 5: Solve for x
    x = 82,936,583,601.62/316,941
  6. Step 6: Final answer
    x = 261,678.30

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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.