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Finding the Fourth Proportional to 326,877.40, 490,218.90 and 127,082.80

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Solution

The fourth proportional to 326,877.40, 490,218.90 and 127,082.80 is: 190,586.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,877.40 : 490,218.90 = 127,082.80 : x
  2. Step 2: Convert to fraction form
    326,877.40/490,218.90 = 127,082.80/x
  3. Step 3: Cross multiply
    326,877.40x = 490,218.90 × 127,082.80
  4. Step 4: Simplify right side
    326,877.40x = 62,298,390,424.92
  5. Step 5: Solve for x
    x = 62,298,390,424.92/326,877.40
  6. Step 6: Final answer
    x = 190,586.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.