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Finding the Fourth Proportional to 235,436.70, 324,915.93 and 128,004.43

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Solution

The fourth proportional to 235,436.70, 324,915.93 and 128,004.43 is: 176,653.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,436.70 : 324,915.93 = 128,004.43 : x
  2. Step 2: Convert to fraction form
    235,436.70/324,915.93 = 128,004.43/x
  3. Step 3: Cross multiply
    235,436.70x = 324,915.93 × 128,004.43
  4. Step 4: Simplify right side
    235,436.70x = 41,590,678,417.57
  5. Step 5: Solve for x
    x = 41,590,678,417.57/235,436.70
  6. Step 6: Final answer
    x = 176,653.34

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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.