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Finding the Fourth Proportional to 336,742.70, 505,114.05 and 87,424.70

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Solution

The fourth proportional to 336,742.70, 505,114.05 and 87,424.70 is: 131,137.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,742.70 : 505,114.05 = 87,424.70 : x
  2. Step 2: Convert to fraction form
    336,742.70/505,114.05 = 87,424.70/x
  3. Step 3: Cross multiply
    336,742.70x = 505,114.05 × 87,424.70
  4. Step 4: Simplify right side
    336,742.70x = 44,159,444,287.04
  5. Step 5: Solve for x
    x = 44,159,444,287.04/336,742.70
  6. Step 6: Final answer
    x = 131,137.05

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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.