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Finding the Fourth Proportional to 235,735.98, 325,322.56 and 128,312.98

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Solution

The fourth proportional to 235,735.98, 325,322.56 and 128,312.98 is: 177,075.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,735.98 : 325,322.56 = 128,312.98 : x
  2. Step 2: Convert to fraction form
    235,735.98/325,322.56 = 128,312.98/x
  3. Step 3: Cross multiply
    235,735.98x = 325,322.56 × 128,312.98
  4. Step 4: Simplify right side
    235,735.98x = 41,743,107,134.83
  5. Step 5: Solve for x
    x = 41,743,107,134.83/235,735.98
  6. Step 6: Final answer
    x = 177,075.67

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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.