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Finding the Fourth Proportional to 235,955.76, 325,621.79 and 128,526.67

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Solution

The fourth proportional to 235,955.76, 325,621.79 and 128,526.67 is: 177,368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,955.76 : 325,621.79 = 128,526.67 : x
  2. Step 2: Convert to fraction form
    235,955.76/325,621.79 = 128,526.67/x
  3. Step 3: Cross multiply
    235,955.76x = 325,621.79 × 128,526.67
  4. Step 4: Simplify right side
    235,955.76x = 41,851,084,348.14
  5. Step 5: Solve for x
    x = 41,851,084,348.14/235,955.76
  6. Step 6: Final answer
    x = 177,368.35

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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.