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Finding the Fourth Proportional to 235,820.40, 353,212.20 and 142,162.80

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Solution

The fourth proportional to 235,820.40, 353,212.20 and 142,162.80 is: 212,931.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,820.40 : 353,212.20 = 142,162.80 : x
  2. Step 2: Convert to fraction form
    235,820.40/353,212.20 = 142,162.80/x
  3. Step 3: Cross multiply
    235,820.40x = 353,212.20 × 142,162.80
  4. Step 4: Simplify right side
    235,820.40x = 50,213,635,346.16
  5. Step 5: Solve for x
    x = 50,213,635,346.16/235,820.40
  6. Step 6: Final answer
    x = 212,931.69

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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.