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Finding the Fourth Proportional to 235,501.88, 324,990.99 and 128,071.62

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Solution

The fourth proportional to 235,501.88, 324,990.99 and 128,071.62 is: 176,737.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,501.88 : 324,990.99 = 128,071.62 : x
  2. Step 2: Convert to fraction form
    235,501.88/324,990.99 = 128,071.62/x
  3. Step 3: Cross multiply
    235,501.88x = 324,990.99 × 128,071.62
  4. Step 4: Simplify right side
    235,501.88x = 41,622,122,574.70
  5. Step 5: Solve for x
    x = 41,622,122,574.70/235,501.88
  6. Step 6: Final answer
    x = 176,737.97

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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.