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Finding the Fourth Proportional to 339,667.28, 468,761.84 and 282,980.24

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Solution

The fourth proportional to 339,667.28, 468,761.84 and 282,980.24 is: 390,530.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,667.28 : 468,761.84 = 282,980.24 : x
  2. Step 2: Convert to fraction form
    339,667.28/468,761.84 = 282,980.24/x
  3. Step 3: Cross multiply
    339,667.28x = 468,761.84 × 282,980.24
  4. Step 4: Simplify right side
    339,667.28x = 132,650,337,986.04
  5. Step 5: Solve for x
    x = 132,650,337,986.04/339,667.28
  6. Step 6: Final answer
    x = 390,530.22

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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.