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Finding the Fourth Proportional to 235,637.40, 325,169.88 and 128,207.85

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Solution

The fourth proportional to 235,637.40, 325,169.88 and 128,207.85 is: 176,921.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,637.40 : 325,169.88 = 128,207.85 : x
  2. Step 2: Convert to fraction form
    235,637.40/325,169.88 = 128,207.85/x
  3. Step 3: Cross multiply
    235,637.40x = 325,169.88 × 128,207.85
  4. Step 4: Simplify right side
    235,637.40x = 41,689,331,199.56
  5. Step 5: Solve for x
    x = 41,689,331,199.56/235,637.40
  6. Step 6: Final answer
    x = 176,921.54

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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.