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Finding the Fourth Proportional to 407,240.80, 611,444.40 and 308,096.80

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Solution

The fourth proportional to 407,240.80, 611,444.40 and 308,096.80 is: 462,586.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,240.80 : 611,444.40 = 308,096.80 : x
  2. Step 2: Convert to fraction form
    407,240.80/611,444.40 = 308,096.80/x
  3. Step 3: Cross multiply
    407,240.80x = 611,444.40 × 308,096.80
  4. Step 4: Simplify right side
    407,240.80x = 188,384,063,017.92
  5. Step 5: Solve for x
    x = 188,384,063,017.92/407,240.80
  6. Step 6: Final answer
    x = 462,586.42

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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.