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Finding the Fourth Proportional to 260,903.40, 391,646.70 and 202,000.20

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Solution

The fourth proportional to 260,903.40, 391,646.70 and 202,000.20 is: 303,226.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,903.40 : 391,646.70 = 202,000.20 : x
  2. Step 2: Convert to fraction form
    260,903.40/391,646.70 = 202,000.20/x
  3. Step 3: Cross multiply
    260,903.40x = 391,646.70 × 202,000.20
  4. Step 4: Simplify right side
    260,903.40x = 79,112,711,729.34
  5. Step 5: Solve for x
    x = 79,112,711,729.34/260,903.40
  6. Step 6: Final answer
    x = 303,226.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.