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Finding the Fourth Proportional to 492,885.80, 739,674.30 and 212,604.20

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Solution

The fourth proportional to 492,885.80, 739,674.30 and 212,604.20 is: 319,055.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,885.80 : 739,674.30 = 212,604.20 : x
  2. Step 2: Convert to fraction form
    492,885.80/739,674.30 = 212,604.20/x
  3. Step 3: Cross multiply
    492,885.80x = 739,674.30 × 212,604.20
  4. Step 4: Simplify right side
    492,885.80x = 157,257,862,812.06
  5. Step 5: Solve for x
    x = 157,257,862,812.06/492,885.80
  6. Step 6: Final answer
    x = 319,055.37

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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.