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Finding the Fourth Proportional to 421,236,978.56, 631,941,645.56 and 144,852,298.53

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Solution

The fourth proportional to 421,236,978.56, 631,941,645.56 and 144,852,298.53 is: 217,308,082.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,236,978.56 : 631,941,645.56 = 144,852,298.53 : x
  2. Step 2: Convert to fraction form
    421,236,978.56/631,941,645.56 = 144,852,298.53/x
  3. Step 3: Cross multiply
    421,236,978.56x = 631,941,645.56 × 144,852,298.53
  4. Step 4: Simplify right side
    421,236,978.56x = 91,538,199,897,842,080
  5. Step 5: Solve for x
    x = 91,538,199,897,842,080/421,236,978.56
  6. Step 6: Final answer
    x = 217,308,082.04

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