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Finding the Fourth Proportional to 405,964.80, 560,332.80 and 244,915.20

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Solution

The fourth proportional to 405,964.80, 560,332.80 and 244,915.20 is: 338,044.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,964.80 : 560,332.80 = 244,915.20 : x
  2. Step 2: Convert to fraction form
    405,964.80/560,332.80 = 244,915.20/x
  3. Step 3: Cross multiply
    405,964.80x = 560,332.80 × 244,915.20
  4. Step 4: Simplify right side
    405,964.80x = 137,234,019,778.56
  5. Step 5: Solve for x
    x = 137,234,019,778.56/405,964.80
  6. Step 6: Final answer
    x = 338,044.14

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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.