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Finding the Fourth Proportional to 235,688.54, 325,249.58 and 128,258.54

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Solution

The fourth proportional to 235,688.54, 325,249.58 and 128,258.54 is: 176,996.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,688.54 : 325,249.58 = 128,258.54 : x
  2. Step 2: Convert to fraction form
    235,688.54/325,249.58 = 128,258.54/x
  3. Step 3: Cross multiply
    235,688.54x = 325,249.58 × 128,258.54
  4. Step 4: Simplify right side
    235,688.54x = 41,716,035,459.04
  5. Step 5: Solve for x
    x = 41,716,035,459.04/235,688.54
  6. Step 6: Final answer
    x = 176,996.46

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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.