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Finding the Fourth Proportional to 319,571.40, 479,321.70 and 114,397.89

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Solution

The fourth proportional to 319,571.40, 479,321.70 and 114,397.89 is: 171,584.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,571.40 : 479,321.70 = 114,397.89 : x
  2. Step 2: Convert to fraction form
    319,571.40/479,321.70 = 114,397.89/x
  3. Step 3: Cross multiply
    319,571.40x = 479,321.70 × 114,397.89
  4. Step 4: Simplify right side
    319,571.40x = 54,833,391,111.21
  5. Step 5: Solve for x
    x = 54,833,391,111.21/319,571.40
  6. Step 6: Final answer
    x = 171,584.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.