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Finding the Fourth Proportional to 348,722.70, 522,954.45 and 138,317.10

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Solution

The fourth proportional to 348,722.70, 522,954.45 and 138,317.10 is: 207,424.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,722.70 : 522,954.45 = 138,317.10 : x
  2. Step 2: Convert to fraction form
    348,722.70/522,954.45 = 138,317.10/x
  3. Step 3: Cross multiply
    348,722.70x = 522,954.45 × 138,317.10
  4. Step 4: Simplify right side
    348,722.70x = 72,333,542,956.10
  5. Step 5: Solve for x
    x = 72,333,542,956.10/348,722.70
  6. Step 6: Final answer
    x = 207,424.25

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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.