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Finding the Fourth Proportional to 391,855.29, 540,530.63 and 246,430.41

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Solution

The fourth proportional to 391,855.29, 540,530.63 and 246,430.41 is: 339,929.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,855.29 : 540,530.63 = 246,430.41 : x
  2. Step 2: Convert to fraction form
    391,855.29/540,530.63 = 246,430.41/x
  3. Step 3: Cross multiply
    391,855.29x = 540,530.63 × 246,430.41
  4. Step 4: Simplify right side
    391,855.29x = 133,203,184,768.46
  5. Step 5: Solve for x
    x = 133,203,184,768.46/391,855.29
  6. Step 6: Final answer
    x = 339,929.53

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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.