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Finding the Fourth Proportional to 490,302.60, 676,613.51 and 275,438.06

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Solution

The fourth proportional to 490,302.60, 676,613.51 and 275,438.06 is: 380,102.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,302.60 : 676,613.51 = 275,438.06 : x
  2. Step 2: Convert to fraction form
    490,302.60/676,613.51 = 275,438.06/x
  3. Step 3: Cross multiply
    490,302.60x = 676,613.51 × 275,438.06
  4. Step 4: Simplify right side
    490,302.60x = 186,365,107,803.93
  5. Step 5: Solve for x
    x = 186,365,107,803.93/490,302.60
  6. Step 6: Final answer
    x = 380,102.22

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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.