Home / 319,146.36-437,228.72-307,181.04

Finding the Fourth Proportional to 319,146.36, 437,228.72 and 307,181.04

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Solution

The fourth proportional to 319,146.36, 437,228.72 and 307,181.04 is: 420,836.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,146.36 : 437,228.72 = 307,181.04 : x
  2. Step 2: Convert to fraction form
    319,146.36/437,228.72 = 307,181.04/x
  3. Step 3: Cross multiply
    319,146.36x = 437,228.72 × 307,181.04
  4. Step 4: Simplify right side
    319,146.36x = 134,308,371,391.56
  5. Step 5: Solve for x
    x = 134,308,371,391.56/319,146.36
  6. Step 6: Final answer
    x = 420,836.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.