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Finding the Fourth Proportional to 320,477.74, 480,679.89 and 83,843.26

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Solution

The fourth proportional to 320,477.74, 480,679.89 and 83,843.26 is: 125,755.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,477.74 : 480,679.89 = 83,843.26 : x
  2. Step 2: Convert to fraction form
    320,477.74/480,679.89 = 83,843.26/x
  3. Step 3: Cross multiply
    320,477.74x = 480,679.89 × 83,843.26
  4. Step 4: Simplify right side
    320,477.74x = 40,301,768,994.04
  5. Step 5: Solve for x
    x = 40,301,768,994.04/320,477.74
  6. Step 6: Final answer
    x = 125,755.28

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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.