Home / 399,610,939.51-599,143,631.13-212,892,798.27

Finding the Fourth Proportional to 399,610,939.51, 599,143,631.13 and 212,892,798.27

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Solution

The fourth proportional to 399,610,939.51, 599,143,631.13 and 212,892,798.27 is: 319,193,874.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,610,939.51 : 599,143,631.13 = 212,892,798.27 : x
  2. Step 2: Convert to fraction form
    399,610,939.51/599,143,631.13 = 212,892,798.27/x
  3. Step 3: Cross multiply
    399,610,939.51x = 599,143,631.13 × 212,892,798.27
  4. Step 4: Simplify right side
    399,610,939.51x = 127,553,364,196,914,384
  5. Step 5: Solve for x
    x = 127,553,364,196,914,384/399,610,939.51
  6. Step 6: Final answer
    x = 319,193,874.81

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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.