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Finding the Fourth Proportional to 259,955.57, 358,732.07 and 145,235.07

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Solution

The fourth proportional to 259,955.57, 358,732.07 and 145,235.07 is: 200,420.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,955.57 : 358,732.07 = 145,235.07 : x
  2. Step 2: Convert to fraction form
    259,955.57/358,732.07 = 145,235.07/x
  3. Step 3: Cross multiply
    259,955.57x = 358,732.07 × 145,235.07
  4. Step 4: Simplify right side
    259,955.57x = 52,100,477,660.78
  5. Step 5: Solve for x
    x = 52,100,477,660.78/259,955.57
  6. Step 6: Final answer
    x = 200,420.70

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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.