Home / 389,181,362.76-537,070,333.68-212,969,400.12

Finding the Fourth Proportional to 389,181,362.76, 537,070,333.68 and 212,969,400.12

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Solution

The fourth proportional to 389,181,362.76, 537,070,333.68 and 212,969,400.12 is: 293,897,801.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,181,362.76 : 537,070,333.68 = 212,969,400.12 : x
  2. Step 2: Convert to fraction form
    389,181,362.76/537,070,333.68 = 212,969,400.12/x
  3. Step 3: Cross multiply
    389,181,362.76x = 537,070,333.68 × 212,969,400.12
  4. Step 4: Simplify right side
    389,181,362.76x = 114,379,546,786,077,824
  5. Step 5: Solve for x
    x = 114,379,546,786,077,824/389,181,362.76
  6. Step 6: Final answer
    x = 293,897,801.21

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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.