Home / 345,282.19-476,513.38-209,321.87

Finding the Fourth Proportional to 345,282.19, 476,513.38 and 209,321.87

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Solution

The fourth proportional to 345,282.19, 476,513.38 and 209,321.87 is: 288,878.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,282.19 : 476,513.38 = 209,321.87 : x
  2. Step 2: Convert to fraction form
    345,282.19/476,513.38 = 209,321.87/x
  3. Step 3: Cross multiply
    345,282.19x = 476,513.38 × 209,321.87
  4. Step 4: Simplify right side
    345,282.19x = 99,744,672,341.09
  5. Step 5: Solve for x
    x = 99,744,672,341.09/345,282.19
  6. Step 6: Final answer
    x = 288,878.70

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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.