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Finding the Fourth Proportional to 390,616.26, 585,730.58 and 124,342.16

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Solution

The fourth proportional to 390,616.26, 585,730.58 and 124,342.16 is: 186,451.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,616.26 : 585,730.58 = 124,342.16 : x
  2. Step 2: Convert to fraction form
    390,616.26/585,730.58 = 124,342.16/x
  3. Step 3: Cross multiply
    390,616.26x = 585,730.58 × 124,342.16
  4. Step 4: Simplify right side
    390,616.26x = 72,831,005,495.25
  5. Step 5: Solve for x
    x = 72,831,005,495.25/390,616.26
  6. Step 6: Final answer
    x = 186,451.55

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