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Finding the Fourth Proportional to 225,575, 311,303.70 and 124,973

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Solution

The fourth proportional to 225,575, 311,303.70 and 124,973 is: 172,468.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,575 : 311,303.70 = 124,973 : x
  2. Step 2: Convert to fraction form
    225,575/311,303.70 = 124,973/x
  3. Step 3: Cross multiply
    225,575x = 311,303.70 × 124,973
  4. Step 4: Simplify right side
    225,575x = 38,904,557,300.10
  5. Step 5: Solve for x
    x = 38,904,557,300.10/225,575
  6. Step 6: Final answer
    x = 172,468.39

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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.