Home / 289,172,315.30-399,053,712.78-163,721,276.24

Finding the Fourth Proportional to 289,172,315.30, 399,053,712.78 and 163,721,276.24

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Solution

The fourth proportional to 289,172,315.30, 399,053,712.78 and 163,721,276.24 is: 225,933,049.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,172,315.30 : 399,053,712.78 = 163,721,276.24 : x
  2. Step 2: Convert to fraction form
    289,172,315.30/399,053,712.78 = 163,721,276.24/x
  3. Step 3: Cross multiply
    289,172,315.30x = 399,053,712.78 × 163,721,276.24
  4. Step 4: Simplify right side
    289,172,315.30x = 65,333,583,142,656,728
  5. Step 5: Solve for x
    x = 65,333,583,142,656,728/289,172,315.30
  6. Step 6: Final answer
    x = 225,933,049.90

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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.