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Finding the Fourth Proportional to 391,493.42, 540,235.34 and 230,317.32

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Solution

The fourth proportional to 391,493.42, 540,235.34 and 230,317.32 is: 317,822.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,493.42 : 540,235.34 = 230,317.32 : x
  2. Step 2: Convert to fraction form
    391,493.42/540,235.34 = 230,317.32/x
  3. Step 3: Cross multiply
    391,493.42x = 540,235.34 × 230,317.32
  4. Step 4: Simplify right side
    391,493.42x = 124,425,555,678.09
  5. Step 5: Solve for x
    x = 124,425,555,678.09/391,493.42
  6. Step 6: Final answer
    x = 317,822.85

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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.