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Finding the Fourth Proportional to 399,450,691.50, 551,258,978.43 and 223,238,681.68

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Solution

The fourth proportional to 399,450,691.50, 551,258,978.43 and 223,238,681.68 is: 308,078,894.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,450,691.50 : 551,258,978.43 = 223,238,681.68 : x
  2. Step 2: Convert to fraction form
    399,450,691.50/551,258,978.43 = 223,238,681.68/x
  3. Step 3: Cross multiply
    399,450,691.50x = 551,258,978.43 × 223,238,681.68
  4. Step 4: Simplify right side
    399,450,691.50x = 123,062,327,608,435,760
  5. Step 5: Solve for x
    x = 123,062,327,608,435,760/399,450,691.50
  6. Step 6: Final answer
    x = 308,078,894.91

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Why These Related Problems?

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