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Finding the Fourth Proportional to 287,454.26, 431,148.36 and 77,075.66

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Solution

The fourth proportional to 287,454.26, 431,148.36 and 77,075.66 is: 115,604.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,454.26 : 431,148.36 = 77,075.66 : x
  2. Step 2: Convert to fraction form
    287,454.26/431,148.36 = 77,075.66/x
  3. Step 3: Cross multiply
    287,454.26x = 431,148.36 × 77,075.66
  4. Step 4: Simplify right side
    287,454.26x = 33,231,044,404.92
  5. Step 5: Solve for x
    x = 33,231,044,404.92/287,454.26
  6. Step 6: Final answer
    x = 115,604.63

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