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Finding the Fourth Proportional to 377,801.64, 521,388.10 and 216,655.40

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Solution

The fourth proportional to 377,801.64, 521,388.10 and 216,655.40 is: 298,996.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,801.64 : 521,388.10 = 216,655.40 : x
  2. Step 2: Convert to fraction form
    377,801.64/521,388.10 = 216,655.40/x
  3. Step 3: Cross multiply
    377,801.64x = 521,388.10 × 216,655.40
  4. Step 4: Simplify right side
    377,801.64x = 112,961,547,360.74
  5. Step 5: Solve for x
    x = 112,961,547,360.74/377,801.64
  6. Step 6: Final answer
    x = 298,996.97

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