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Finding the Fourth Proportional to 391,542.02, 540,588.04 and 300,735.62

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Solution

The fourth proportional to 391,542.02, 540,588.04 and 300,735.62 is: 415,214.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,542.02 : 540,588.04 = 300,735.62 : x
  2. Step 2: Convert to fraction form
    391,542.02/540,588.04 = 300,735.62/x
  3. Step 3: Cross multiply
    391,542.02x = 540,588.04 × 300,735.62
  4. Step 4: Simplify right side
    391,542.02x = 162,574,079,373.99
  5. Step 5: Solve for x
    x = 162,574,079,373.99/391,542.02
  6. Step 6: Final answer
    x = 415,214.90

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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.