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Finding the Fourth Proportional to 531,212.88, 733,052.48 and 289,490.30

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Solution

The fourth proportional to 531,212.88, 733,052.48 and 289,490.30 is: 399,485.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,212.88 : 733,052.48 = 289,490.30 : x
  2. Step 2: Convert to fraction form
    531,212.88/733,052.48 = 289,490.30/x
  3. Step 3: Cross multiply
    531,212.88x = 733,052.48 × 289,490.30
  4. Step 4: Simplify right side
    531,212.88x = 212,211,585,738.98
  5. Step 5: Solve for x
    x = 212,211,585,738.98/531,212.88
  6. Step 6: Final answer
    x = 399,485.01

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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.