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Finding the Fourth Proportional to 531,939.20, 797,908.80 and 265,740.80

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Solution

The fourth proportional to 531,939.20, 797,908.80 and 265,740.80 is: 398,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,939.20 : 797,908.80 = 265,740.80 : x
  2. Step 2: Convert to fraction form
    531,939.20/797,908.80 = 265,740.80/x
  3. Step 3: Cross multiply
    531,939.20x = 797,908.80 × 265,740.80
  4. Step 4: Simplify right side
    531,939.20x = 212,036,922,839.04
  5. Step 5: Solve for x
    x = 212,036,922,839.04/531,939.20
  6. Step 6: Final answer
    x = 398,611.20

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Similar ratio
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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.