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Finding the Fourth Proportional to 311,580.70, 429,477.66 and 243,479.34

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Solution

The fourth proportional to 311,580.70, 429,477.66 and 243,479.34 is: 335,607.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,580.70 : 429,477.66 = 243,479.34 : x
  2. Step 2: Convert to fraction form
    311,580.70/429,477.66 = 243,479.34/x
  3. Step 3: Cross multiply
    311,580.70x = 429,477.66 × 243,479.34
  4. Step 4: Simplify right side
    311,580.70x = 104,568,937,201.54
  5. Step 5: Solve for x
    x = 104,568,937,201.54/311,580.70
  6. Step 6: Final answer
    x = 335,607.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.