Home / 319,198,389.92-440,493,579.13-172,520,673.92

Finding the Fourth Proportional to 319,198,389.92, 440,493,579.13 and 172,520,673.92

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Solution

The fourth proportional to 319,198,389.92, 440,493,579.13 and 172,520,673.92 is: 238,078,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,198,389.92 : 440,493,579.13 = 172,520,673.92 : x
  2. Step 2: Convert to fraction form
    319,198,389.92/440,493,579.13 = 172,520,673.92/x
  3. Step 3: Cross multiply
    319,198,389.92x = 440,493,579.13 × 172,520,673.92
  4. Step 4: Simplify right side
    319,198,389.92x = 75,994,249,128,509,136
  5. Step 5: Solve for x
    x = 75,994,249,128,509,136/319,198,389.92
  6. Step 6: Final answer
    x = 238,078,422.47

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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.