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Finding the Fourth Proportional to 531,048.75, 732,843.21 and 289,330.57

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Solution

The fourth proportional to 531,048.75, 732,843.21 and 289,330.57 is: 399,273.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,048.75 : 732,843.21 = 289,330.57 : x
  2. Step 2: Convert to fraction form
    531,048.75/732,843.21 = 289,330.57/x
  3. Step 3: Cross multiply
    531,048.75x = 732,843.21 × 289,330.57
  4. Step 4: Simplify right side
    531,048.75x = 212,033,943,669.93
  5. Step 5: Solve for x
    x = 212,033,943,669.93/531,048.75
  6. Step 6: Final answer
    x = 399,273.97

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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.