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Finding the Fourth Proportional to 296,923.60, 445,417.80 and 287,592.40

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Solution

The fourth proportional to 296,923.60, 445,417.80 and 287,592.40 is: 431,419.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,923.60 : 445,417.80 = 287,592.40 : x
  2. Step 2: Convert to fraction form
    296,923.60/445,417.80 = 287,592.40/x
  3. Step 3: Cross multiply
    296,923.60x = 445,417.80 × 287,592.40
  4. Step 4: Simplify right side
    296,923.60x = 128,098,774,104.72
  5. Step 5: Solve for x
    x = 128,098,774,104.72/296,923.60
  6. Step 6: Final answer
    x = 431,419.98

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