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Finding the Fourth Proportional to 266,688,201.20, 400,054,420.20 and 84,930,249.20

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Solution

The fourth proportional to 266,688,201.20, 400,054,420.20 and 84,930,249.20 is: 127,402,417.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,688,201.20 : 400,054,420.20 = 84,930,249.20 : x
  2. Step 2: Convert to fraction form
    266,688,201.20/400,054,420.20 = 84,930,249.20/x
  3. Step 3: Cross multiply
    266,688,201.20x = 400,054,420.20 × 84,930,249.20
  4. Step 4: Simplify right side
    266,688,201.20x = 33,976,721,601,147,516
  5. Step 5: Solve for x
    x = 33,976,721,601,147,516/266,688,201.20
  6. Step 6: Final answer
    x = 127,402,417.69

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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.