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Finding the Fourth Proportional to 235,896.32, 325,532.40 and 128,465.12

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Solution

The fourth proportional to 235,896.32, 325,532.40 and 128,465.12 is: 177,279.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,896.32 : 325,532.40 = 128,465.12 : x
  2. Step 2: Convert to fraction form
    235,896.32/325,532.40 = 128,465.12/x
  3. Step 3: Cross multiply
    235,896.32x = 325,532.40 × 128,465.12
  4. Step 4: Simplify right side
    235,896.32x = 41,819,558,829.89
  5. Step 5: Solve for x
    x = 41,819,558,829.89/235,896.32
  6. Step 6: Final answer
    x = 177,279.40

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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.