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Finding the Fourth Proportional to 531,342.92, 733,242.31 and 289,623.40

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Solution

The fourth proportional to 531,342.92, 733,242.31 and 289,623.40 is: 399,674.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,342.92 : 733,242.31 = 289,623.40 : x
  2. Step 2: Convert to fraction form
    531,342.92/733,242.31 = 289,623.40/x
  3. Step 3: Cross multiply
    531,342.92x = 733,242.31 × 289,623.40
  4. Step 4: Simplify right side
    531,342.92x = 212,364,128,288.89
  5. Step 5: Solve for x
    x = 212,364,128,288.89/531,342.92
  6. Step 6: Final answer
    x = 399,674.33

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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.