Home / 309,943,898.12-427,722,564.24-170,714,666.72

Finding the Fourth Proportional to 309,943,898.12, 427,722,564.24 and 170,714,666.72

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Solution

The fourth proportional to 309,943,898.12, 427,722,564.24 and 170,714,666.72 is: 235,586,231.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,943,898.12 : 427,722,564.24 = 170,714,666.72 : x
  2. Step 2: Convert to fraction form
    309,943,898.12/427,722,564.24 = 170,714,666.72/x
  3. Step 3: Cross multiply
    309,943,898.12x = 427,722,564.24 × 170,714,666.72
  4. Step 4: Simplify right side
    309,943,898.12x = 73,018,515,002,855,392
  5. Step 5: Solve for x
    x = 73,018,515,002,855,392/309,943,898.12
  6. Step 6: Final answer
    x = 235,586,231.72

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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.