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Finding the Fourth Proportional to 251,998.40, 378,580.80 and 173,266.40

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Solution

The fourth proportional to 251,998.40, 378,580.80 and 173,266.40 is: 260,300.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,998.40 : 378,580.80 = 173,266.40 : x
  2. Step 2: Convert to fraction form
    251,998.40/378,580.80 = 173,266.40/x
  3. Step 3: Cross multiply
    251,998.40x = 378,580.80 × 173,266.40
  4. Step 4: Simplify right side
    251,998.40x = 65,595,332,325.12
  5. Step 5: Solve for x
    x = 65,595,332,325.12/251,998.40
  6. Step 6: Final answer
    x = 260,300.59

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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.