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Finding the Fourth Proportional to 322,570,012.80, 483,918,004.80 and 128,448,393.60

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Solution

The fourth proportional to 322,570,012.80, 483,918,004.80 and 128,448,393.60 is: 192,697,671.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,570,012.80 : 483,918,004.80 = 128,448,393.60 : x
  2. Step 2: Convert to fraction form
    322,570,012.80/483,918,004.80 = 128,448,393.60/x
  3. Step 3: Cross multiply
    322,570,012.80x = 483,918,004.80 × 128,448,393.60
  4. Step 4: Simplify right side
    322,570,012.80x = 62,158,490,350,677,088
  5. Step 5: Solve for x
    x = 62,158,490,350,677,088/322,570,012.80
  6. Step 6: Final answer
    x = 192,697,671.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.