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Finding the Fourth Proportional to 223,525.74, 308,579.76 and 172,423.76

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Solution

The fourth proportional to 223,525.74, 308,579.76 and 172,423.76 is: 238,032.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,525.74 : 308,579.76 = 172,423.76 : x
  2. Step 2: Convert to fraction form
    223,525.74/308,579.76 = 172,423.76/x
  3. Step 3: Cross multiply
    223,525.74x = 308,579.76 × 172,423.76
  4. Step 4: Simplify right side
    223,525.74x = 53,206,480,936.20
  5. Step 5: Solve for x
    x = 53,206,480,936.20/223,525.74
  6. Step 6: Final answer
    x = 238,032.90

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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.