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Finding the Fourth Proportional to 194,051.20, 290,493.60 and 115,124.80

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Solution

The fourth proportional to 194,051.20, 290,493.60 and 115,124.80 is: 172,341.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,051.20 : 290,493.60 = 115,124.80 : x
  2. Step 2: Convert to fraction form
    194,051.20/290,493.60 = 115,124.80/x
  3. Step 3: Cross multiply
    194,051.20x = 290,493.60 × 115,124.80
  4. Step 4: Simplify right side
    194,051.20x = 33,443,017,601.28
  5. Step 5: Solve for x
    x = 33,443,017,601.28/194,051.20
  6. Step 6: Final answer
    x = 172,341.20

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1.5x scale

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.