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Finding the Fourth Proportional to 279,432.60, 419,148.90 and 101,880.60

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Solution

The fourth proportional to 279,432.60, 419,148.90 and 101,880.60 is: 152,820.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,432.60 : 419,148.90 = 101,880.60 : x
  2. Step 2: Convert to fraction form
    279,432.60/419,148.90 = 101,880.60/x
  3. Step 3: Cross multiply
    279,432.60x = 419,148.90 × 101,880.60
  4. Step 4: Simplify right side
    279,432.60x = 42,703,141,421.34
  5. Step 5: Solve for x
    x = 42,703,141,421.34/279,432.60
  6. Step 6: Final answer
    x = 152,820.90

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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.