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Finding the Fourth Proportional to 235,896.86, 325,543.49 and 128,472.74

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Solution

The fourth proportional to 235,896.86, 325,543.49 and 128,472.74 is: 177,295.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,896.86 : 325,543.49 = 128,472.74 : x
  2. Step 2: Convert to fraction form
    235,896.86/325,543.49 = 128,472.74/x
  3. Step 3: Cross multiply
    235,896.86x = 325,543.49 × 128,472.74
  4. Step 4: Simplify right side
    235,896.86x = 41,823,461,879.38
  5. Step 5: Solve for x
    x = 41,823,461,879.38/235,896.86
  6. Step 6: Final answer
    x = 177,295.55

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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.