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Finding the Fourth Proportional to 319,144.86, 437,226.66 and 307,179.54

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Solution

The fourth proportional to 319,144.86, 437,226.66 and 307,179.54 is: 420,834.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,144.86 : 437,226.66 = 307,179.54 : x
  2. Step 2: Convert to fraction form
    319,144.86/437,226.66 = 307,179.54/x
  3. Step 3: Cross multiply
    319,144.86x = 437,226.66 × 307,179.54
  4. Step 4: Simplify right side
    319,144.86x = 134,307,084,294.54
  5. Step 5: Solve for x
    x = 134,307,084,294.54/319,144.86
  6. Step 6: Final answer
    x = 420,834.24

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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.