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Finding the Fourth Proportional to 391,433.62, 540,191.70 and 373,497.49

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Solution

The fourth proportional to 391,433.62, 540,191.70 and 373,497.49 is: 515,439.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,433.62 : 540,191.70 = 373,497.49 : x
  2. Step 2: Convert to fraction form
    391,433.62/540,191.70 = 373,497.49/x
  3. Step 3: Cross multiply
    391,433.62x = 540,191.70 × 373,497.49
  4. Step 4: Simplify right side
    391,433.62x = 201,760,243,368.53
  5. Step 5: Solve for x
    x = 201,760,243,368.53/391,433.62
  6. Step 6: Final answer
    x = 515,439.22

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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.