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Finding the Fourth Proportional to 391,426.99, 540,160.03 and 230,292.40

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Solution

The fourth proportional to 391,426.99, 540,160.03 and 230,292.40 is: 317,798.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,426.99 : 540,160.03 = 230,292.40 : x
  2. Step 2: Convert to fraction form
    391,426.99/540,160.03 = 230,292.40/x
  3. Step 3: Cross multiply
    391,426.99x = 540,160.03 × 230,292.40
  4. Step 4: Simplify right side
    391,426.99x = 124,394,749,692.77
  5. Step 5: Solve for x
    x = 124,394,749,692.77/391,426.99
  6. Step 6: Final answer
    x = 317,798.09

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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.