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Finding the Fourth Proportional to 309,026.40, 463,712.40 and 131,503.20

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Solution

The fourth proportional to 309,026.40, 463,712.40 and 131,503.20 is: 197,328.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,026.40 : 463,712.40 = 131,503.20 : x
  2. Step 2: Convert to fraction form
    309,026.40/463,712.40 = 131,503.20/x
  3. Step 3: Cross multiply
    309,026.40x = 463,712.40 × 131,503.20
  4. Step 4: Simplify right side
    309,026.40x = 60,979,664,479.68
  5. Step 5: Solve for x
    x = 60,979,664,479.68/309,026.40
  6. Step 6: Final answer
    x = 197,328.33

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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.