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Finding the Fourth Proportional to 435,488, 653,232 and 140,000

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Solution

The fourth proportional to 435,488, 653,232 and 140,000 is: 210,000

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,488 : 653,232 = 140,000 : x
  2. Step 2: Convert to fraction form
    435,488/653,232 = 140,000/x
  3. Step 3: Cross multiply
    435,488x = 653,232 × 140,000
  4. Step 4: Simplify right side
    435,488x = 91,452,480,000
  5. Step 5: Solve for x
    x = 91,452,480,000/435,488
  6. Step 6: Final answer
    x = 210,000

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