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Finding the Fourth Proportional to 235,538.78, 325,044.36 and 128,108.93

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Solution

The fourth proportional to 235,538.78, 325,044.36 and 128,108.93 is: 176,790.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,538.78 : 325,044.36 = 128,108.93 : x
  2. Step 2: Convert to fraction form
    235,538.78/325,044.36 = 128,108.93/x
  3. Step 3: Cross multiply
    235,538.78x = 325,044.36 × 128,108.93
  4. Step 4: Simplify right side
    235,538.78x = 41,641,083,536.91
  5. Step 5: Solve for x
    x = 41,641,083,536.91/235,538.78
  6. Step 6: Final answer
    x = 176,790.78

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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.