Home / 308,822.58-426,139.35-172,864.14

Finding the Fourth Proportional to 308,822.58, 426,139.35 and 172,864.14

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Solution

The fourth proportional to 308,822.58, 426,139.35 and 172,864.14 is: 238,532.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,822.58 : 426,139.35 = 172,864.14 : x
  2. Step 2: Convert to fraction form
    308,822.58/426,139.35 = 172,864.14/x
  3. Step 3: Cross multiply
    308,822.58x = 426,139.35 × 172,864.14
  4. Step 4: Simplify right side
    308,822.58x = 73,664,212,257.91
  5. Step 5: Solve for x
    x = 73,664,212,257.91/308,822.58
  6. Step 6: Final answer
    x = 238,532.47

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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.