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Finding the Fourth Proportional to 538,408.40, 743,000.40 and 293,392.71

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Solution

The fourth proportional to 538,408.40, 743,000.40 and 293,392.71 is: 404,880.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,408.40 : 743,000.40 = 293,392.71 : x
  2. Step 2: Convert to fraction form
    538,408.40/743,000.40 = 293,392.71/x
  3. Step 3: Cross multiply
    538,408.40x = 743,000.40 × 293,392.71
  4. Step 4: Simplify right side
    538,408.40x = 217,990,900,887.08
  5. Step 5: Solve for x
    x = 217,990,900,887.08/538,408.40
  6. Step 6: Final answer
    x = 404,880.20

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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.