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Finding the Fourth Proportional to 230,770, 318,462.60 and 124,786

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Solution

The fourth proportional to 230,770, 318,462.60 and 124,786 is: 172,204.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,770 : 318,462.60 = 124,786 : x
  2. Step 2: Convert to fraction form
    230,770/318,462.60 = 124,786/x
  3. Step 3: Cross multiply
    230,770x = 318,462.60 × 124,786
  4. Step 4: Simplify right side
    230,770x = 39,739,674,003.60
  5. Step 5: Solve for x
    x = 39,739,674,003.60/230,770
  6. Step 6: Final answer
    x = 172,204.68

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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.