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Finding the Fourth Proportional to 236,689.67, 326,632.96 and 129,259.71

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Solution

The fourth proportional to 236,689.67, 326,632.96 and 129,259.71 is: 178,379.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,689.67 : 326,632.96 = 129,259.71 : x
  2. Step 2: Convert to fraction form
    236,689.67/326,632.96 = 129,259.71/x
  3. Step 3: Cross multiply
    236,689.67x = 326,632.96 × 129,259.71
  4. Step 4: Simplify right side
    236,689.67x = 42,220,481,039.74
  5. Step 5: Solve for x
    x = 42,220,481,039.74/236,689.67
  6. Step 6: Final answer
    x = 178,379.06

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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.