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Finding the Fourth Proportional to 317,375.70, 437,978.40 and 181,412.58

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Solution

The fourth proportional to 317,375.70, 437,978.40 and 181,412.58 is: 250,349.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,375.70 : 437,978.40 = 181,412.58 : x
  2. Step 2: Convert to fraction form
    317,375.70/437,978.40 = 181,412.58/x
  3. Step 3: Cross multiply
    317,375.70x = 437,978.40 × 181,412.58
  4. Step 4: Simplify right side
    317,375.70x = 79,454,791,528.27
  5. Step 5: Solve for x
    x = 79,454,791,528.27/317,375.70
  6. Step 6: Final answer
    x = 250,349.32

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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.