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Finding the Fourth Proportional to 259,953.45, 358,722.92 and 145,209.33

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Solution

The fourth proportional to 259,953.45, 358,722.92 and 145,209.33 is: 200,381.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,953.45 : 358,722.92 = 145,209.33 : x
  2. Step 2: Convert to fraction form
    259,953.45/358,722.92 = 145,209.33/x
  3. Step 3: Cross multiply
    259,953.45x = 358,722.92 × 145,209.33
  4. Step 4: Simplify right side
    259,953.45x = 52,089,914,142.80
  5. Step 5: Solve for x
    x = 52,089,914,142.80/259,953.45
  6. Step 6: Final answer
    x = 200,381.70

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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.