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Finding the Fourth Proportional to 330,876.51, 456,609.53 and 187,636.56

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Solution

The fourth proportional to 330,876.51, 456,609.53 and 187,636.56 is: 258,938.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,876.51 : 456,609.53 = 187,636.56 : x
  2. Step 2: Convert to fraction form
    330,876.51/456,609.53 = 187,636.56/x
  3. Step 3: Cross multiply
    330,876.51x = 456,609.53 × 187,636.56
  4. Step 4: Simplify right side
    330,876.51x = 85,676,640,534.23
  5. Step 5: Solve for x
    x = 85,676,640,534.23/330,876.51
  6. Step 6: Final answer
    x = 258,938.42

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1.5x scale

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.