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Finding the Fourth Proportional to 559,408.20, 838,456.20 and 293,031.60

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Solution

The fourth proportional to 559,408.20, 838,456.20 and 293,031.60 is: 439,203.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,408.20 : 838,456.20 = 293,031.60 : x
  2. Step 2: Convert to fraction form
    559,408.20/838,456.20 = 293,031.60/x
  3. Step 3: Cross multiply
    559,408.20x = 838,456.20 × 293,031.60
  4. Step 4: Simplify right side
    559,408.20x = 245,694,161,815.92
  5. Step 5: Solve for x
    x = 245,694,161,815.92/559,408.20
  6. Step 6: Final answer
    x = 439,203.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.