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Finding the Fourth Proportional to 235,851.04, 325,471.60 and 128,421.04

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Solution

The fourth proportional to 235,851.04, 325,471.60 and 128,421.04 is: 177,219.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,851.04 : 325,471.60 = 128,421.04 : x
  2. Step 2: Convert to fraction form
    235,851.04/325,471.60 = 128,421.04/x
  3. Step 3: Cross multiply
    235,851.04x = 325,471.60 × 128,421.04
  4. Step 4: Simplify right side
    235,851.04x = 41,797,401,362.46
  5. Step 5: Solve for x
    x = 41,797,401,362.46/235,851.04
  6. Step 6: Final answer
    x = 177,219.49

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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.