Home / 386,581,098.72-533,481,995.16-212,740,842.72

Finding the Fourth Proportional to 386,581,098.72, 533,481,995.16 and 212,740,842.72

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Solution

The fourth proportional to 386,581,098.72, 533,481,995.16 and 212,740,842.72 is: 293,582,406.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,581,098.72 : 533,481,995.16 = 212,740,842.72 : x
  2. Step 2: Convert to fraction form
    386,581,098.72/533,481,995.16 = 212,740,842.72/x
  3. Step 3: Cross multiply
    386,581,098.72x = 533,481,995.16 × 212,740,842.72
  4. Step 4: Simplify right side
    386,581,098.72x = 113,493,409,226,285,360
  5. Step 5: Solve for x
    x = 113,493,409,226,285,360/386,581,098.72
  6. Step 6: Final answer
    x = 293,582,406.39

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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.