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Finding the Fourth Proportional to 239,636.72, 330,639.70 and 146,478.82

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Solution

The fourth proportional to 239,636.72, 330,639.70 and 146,478.82 is: 202,104.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,636.72 : 330,639.70 = 146,478.82 : x
  2. Step 2: Convert to fraction form
    239,636.72/330,639.70 = 146,478.82/x
  3. Step 3: Cross multiply
    239,636.72x = 330,639.70 × 146,478.82
  4. Step 4: Simplify right side
    239,636.72x = 48,431,713,101.15
  5. Step 5: Solve for x
    x = 48,431,713,101.15/239,636.72
  6. Step 6: Final answer
    x = 202,104.72

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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.