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Finding the Fourth Proportional to 309,888.96, 465,030.06 and 132,397.32

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Solution

The fourth proportional to 309,888.96, 465,030.06 and 132,397.32 is: 198,679.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,888.96 : 465,030.06 = 132,397.32 : x
  2. Step 2: Convert to fraction form
    309,888.96/465,030.06 = 132,397.32/x
  3. Step 3: Cross multiply
    309,888.96x = 465,030.06 × 132,397.32
  4. Step 4: Simplify right side
    309,888.96x = 61,568,733,663.44
  5. Step 5: Solve for x
    x = 61,568,733,663.44/309,888.96
  6. Step 6: Final answer
    x = 198,679.98

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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.