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Finding the Fourth Proportional to 158,448,410.40, 221,978,940 and 158,448,410.40

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Solution

The fourth proportional to 158,448,410.40, 221,978,940 and 158,448,410.40 is: 221,978,940

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,448,410.40 : 221,978,940 = 158,448,410.40 : x
  2. Step 2: Convert to fraction form
    158,448,410.40/221,978,940 = 158,448,410.40/x
  3. Step 3: Cross multiply
    158,448,410.40x = 221,978,940 × 158,448,410.40
  4. Step 4: Simplify right side
    158,448,410.40x = 35,172,210,185,276,976
  5. Step 5: Solve for x
    x = 35,172,210,185,276,976/158,448,410.40
  6. Step 6: Final answer
    x = 221,978,940

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.