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Finding the Fourth Proportional to 238,379.22, 328,947.08 and 130,953.78

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Solution

The fourth proportional to 238,379.22, 328,947.08 and 130,953.78 is: 180,707.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,379.22 : 328,947.08 = 130,953.78 : x
  2. Step 2: Convert to fraction form
    238,379.22/328,947.08 = 130,953.78/x
  3. Step 3: Cross multiply
    238,379.22x = 328,947.08 × 130,953.78
  4. Step 4: Simplify right side
    238,379.22x = 43,076,862,891.19
  5. Step 5: Solve for x
    x = 43,076,862,891.19/238,379.22
  6. Step 6: Final answer
    x = 180,707.29

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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.