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Finding the Fourth Proportional to 259,903.71, 358,628.94 and 145,168.21

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Solution

The fourth proportional to 259,903.71, 358,628.94 and 145,168.21 is: 200,310.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,903.71 : 358,628.94 = 145,168.21 : x
  2. Step 2: Convert to fraction form
    259,903.71/358,628.94 = 145,168.21/x
  3. Step 3: Cross multiply
    259,903.71x = 358,628.94 × 145,168.21
  4. Step 4: Simplify right side
    259,903.71x = 52,061,521,274.00
  5. Step 5: Solve for x
    x = 52,061,521,274.00/259,903.71
  6. Step 6: Final answer
    x = 200,310.80

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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.