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Finding the Fourth Proportional to 319,503.36, 479,316.48 and 122,496

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Solution

The fourth proportional to 319,503.36, 479,316.48 and 122,496 is: 183,767.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,503.36 : 479,316.48 = 122,496 : x
  2. Step 2: Convert to fraction form
    319,503.36/479,316.48 = 122,496/x
  3. Step 3: Cross multiply
    319,503.36x = 479,316.48 × 122,496
  4. Step 4: Simplify right side
    319,503.36x = 58,714,351,534.08
  5. Step 5: Solve for x
    x = 58,714,351,534.08/319,503.36
  6. Step 6: Final answer
    x = 183,767.56

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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.