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Finding the Fourth Proportional to 438,160.80, 657,241.20 and 290,416.80

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Solution

The fourth proportional to 438,160.80, 657,241.20 and 290,416.80 is: 435,625.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,160.80 : 657,241.20 = 290,416.80 : x
  2. Step 2: Convert to fraction form
    438,160.80/657,241.20 = 290,416.80/x
  3. Step 3: Cross multiply
    438,160.80x = 657,241.20 × 290,416.80
  4. Step 4: Simplify right side
    438,160.80x = 190,873,886,132.16
  5. Step 5: Solve for x
    x = 190,873,886,132.16/438,160.80
  6. Step 6: Final answer
    x = 435,625.20

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