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Finding the Fourth Proportional to 253,374.12, 379,303.92 and 153,231.39

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Solution

The fourth proportional to 253,374.12, 379,303.92 and 153,231.39 is: 229,389.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,374.12 : 379,303.92 = 153,231.39 : x
  2. Step 2: Convert to fraction form
    253,374.12/379,303.92 = 153,231.39/x
  3. Step 3: Cross multiply
    253,374.12x = 379,303.92 × 153,231.39
  4. Step 4: Simplify right side
    253,374.12x = 58,121,266,894.05
  5. Step 5: Solve for x
    x = 58,121,266,894.05/253,374.12
  6. Step 6: Final answer
    x = 229,389.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.