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Finding the Fourth Proportional to 531,049.25, 732,843.90 and 289,331.07

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Solution

The fourth proportional to 531,049.25, 732,843.90 and 289,331.07 is: 399,274.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,049.25 : 732,843.90 = 289,331.07 : x
  2. Step 2: Convert to fraction form
    531,049.25/732,843.90 = 289,331.07/x
  3. Step 3: Cross multiply
    531,049.25x = 732,843.90 × 289,331.07
  4. Step 4: Simplify right side
    531,049.25x = 212,034,509,729.97
  5. Step 5: Solve for x
    x = 212,034,509,729.97/531,049.25
  6. Step 6: Final answer
    x = 399,274.67

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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.