Home / 345,277.89-476,507.45-209,317.57

Finding the Fourth Proportional to 345,277.89, 476,507.45 and 209,317.57

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Solution

The fourth proportional to 345,277.89, 476,507.45 and 209,317.57 is: 288,872.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,277.89 : 476,507.45 = 209,317.57 : x
  2. Step 2: Convert to fraction form
    345,277.89/476,507.45 = 209,317.57/x
  3. Step 3: Cross multiply
    345,277.89x = 476,507.45 × 209,317.57
  4. Step 4: Simplify right side
    345,277.89x = 99,741,381,520.90
  5. Step 5: Solve for x
    x = 99,741,381,520.90/345,277.89
  6. Step 6: Final answer
    x = 288,872.77

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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.