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Finding the Fourth Proportional to 162,820.60, 243,906.90 and 143,337.40

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Solution

The fourth proportional to 162,820.60, 243,906.90 and 143,337.40 is: 214,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,820.60 : 243,906.90 = 143,337.40 : x
  2. Step 2: Convert to fraction form
    162,820.60/243,906.90 = 143,337.40/x
  3. Step 3: Cross multiply
    162,820.60x = 243,906.90 × 143,337.40
  4. Step 4: Simplify right side
    162,820.60x = 34,960,980,888.06
  5. Step 5: Solve for x
    x = 34,960,980,888.06/162,820.60
  6. Step 6: Final answer
    x = 214,720.87

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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.