Home / 388,102,076.40-535,578,092.58-211,890,066.30

Finding the Fourth Proportional to 388,102,076.40, 535,578,092.58 and 211,890,066.30

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Solution

The fourth proportional to 388,102,076.40, 535,578,092.58 and 211,890,066.30 is: 292,406,777.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,102,076.40 : 535,578,092.58 = 211,890,066.30 : x
  2. Step 2: Convert to fraction form
    388,102,076.40/535,578,092.58 = 211,890,066.30/x
  3. Step 3: Cross multiply
    388,102,076.40x = 535,578,092.58 × 211,890,066.30
  4. Step 4: Simplify right side
    388,102,076.40x = 113,483,677,545,603,744
  5. Step 5: Solve for x
    x = 113,483,677,545,603,744/388,102,076.40
  6. Step 6: Final answer
    x = 292,406,777.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.