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Finding the Fourth Proportional to 291,876, 402,788.88 and 157,740

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Solution

The fourth proportional to 291,876, 402,788.88 and 157,740 is: 217,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,876 : 402,788.88 = 157,740 : x
  2. Step 2: Convert to fraction form
    291,876/402,788.88 = 157,740/x
  3. Step 3: Cross multiply
    291,876x = 402,788.88 × 157,740
  4. Step 4: Simplify right side
    291,876x = 63,535,917,931.20
  5. Step 5: Solve for x
    x = 63,535,917,931.20/291,876
  6. Step 6: Final answer
    x = 217,681.20

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