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Finding the Fourth Proportional to 309,407.58, 464,143.77 and 131,933.34

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Solution

The fourth proportional to 309,407.58, 464,143.77 and 131,933.34 is: 197,913.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,407.58 : 464,143.77 = 131,933.34 : x
  2. Step 2: Convert to fraction form
    309,407.58/464,143.77 = 131,933.34/x
  3. Step 3: Cross multiply
    309,407.58x = 464,143.77 × 131,933.34
  4. Step 4: Simplify right side
    309,407.58x = 61,236,037,816.29
  5. Step 5: Solve for x
    x = 61,236,037,816.29/309,407.58
  6. Step 6: Final answer
    x = 197,913.83

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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.