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Finding the Fourth Proportional to 288,387.48, 397,412.54 and 207,662.57

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Solution

The fourth proportional to 288,387.48, 397,412.54 and 207,662.57 is: 286,169.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,387.48 : 397,412.54 = 207,662.57 : x
  2. Step 2: Convert to fraction form
    288,387.48/397,412.54 = 207,662.57/x
  3. Step 3: Cross multiply
    288,387.48x = 397,412.54 × 207,662.57
  4. Step 4: Simplify right side
    288,387.48x = 82,527,709,406.63
  5. Step 5: Solve for x
    x = 82,527,709,406.63/288,387.48
  6. Step 6: Final answer
    x = 286,169.53

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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.