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Finding the Fourth Proportional to 380,939.58, 572,120.55 and 335,363.51

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Solution

The fourth proportional to 380,939.58, 572,120.55 and 335,363.51 is: 503,671.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,939.58 : 572,120.55 = 335,363.51 : x
  2. Step 2: Convert to fraction form
    380,939.58/572,120.55 = 335,363.51/x
  3. Step 3: Cross multiply
    380,939.58x = 572,120.55 × 335,363.51
  4. Step 4: Simplify right side
    380,939.58x = 191,868,357,221.43
  5. Step 5: Solve for x
    x = 191,868,357,221.43/380,939.58
  6. Step 6: Final answer
    x = 503,671.36

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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.