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Finding the Fourth Proportional to 342,989.03, 514,483.55 and 143,200.66

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Solution

The fourth proportional to 342,989.03, 514,483.55 and 143,200.66 is: 214,800.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,989.03 : 514,483.55 = 143,200.66 : x
  2. Step 2: Convert to fraction form
    342,989.03/514,483.55 = 143,200.66/x
  3. Step 3: Cross multiply
    342,989.03x = 514,483.55 × 143,200.66
  4. Step 4: Simplify right side
    342,989.03x = 73,674,383,418.59
  5. Step 5: Solve for x
    x = 73,674,383,418.59/342,989.03
  6. Step 6: Final answer
    x = 214,800.99

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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.