Home / 391,931.46-540,865.01-222,165.59

Finding the Fourth Proportional to 391,931.46, 540,865.01 and 222,165.59

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Solution

The fourth proportional to 391,931.46, 540,865.01 and 222,165.59 is: 306,588.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,931.46 : 540,865.01 = 222,165.59 : x
  2. Step 2: Convert to fraction form
    391,931.46/540,865.01 = 222,165.59/x
  3. Step 3: Cross multiply
    391,931.46x = 540,865.01 × 222,165.59
  4. Step 4: Simplify right side
    391,931.46x = 120,161,590,241.85
  5. Step 5: Solve for x
    x = 120,161,590,241.85/391,931.46
  6. Step 6: Final answer
    x = 306,588.28

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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.