Home / 213,662,908.80-320,830,286.40-122,963,644.80

Finding the Fourth Proportional to 213,662,908.80, 320,830,286.40 and 122,963,644.80

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Solution

The fourth proportional to 213,662,908.80, 320,830,286.40 and 122,963,644.80 is: 184,638,792.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,662,908.80 : 320,830,286.40 = 122,963,644.80 : x
  2. Step 2: Convert to fraction form
    213,662,908.80/320,830,286.40 = 122,963,644.80/x
  3. Step 3: Cross multiply
    213,662,908.80x = 320,830,286.40 × 122,963,644.80
  4. Step 4: Simplify right side
    213,662,908.80x = 39,450,461,377,971,864
  5. Step 5: Solve for x
    x = 39,450,461,377,971,864/213,662,908.80
  6. Step 6: Final answer
    x = 184,638,792.01

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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.