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Finding the Fourth Proportional to 326,885.40, 490,230.90 and 127,090.80

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Solution

The fourth proportional to 326,885.40, 490,230.90 and 127,090.80 is: 190,598.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,885.40 : 490,230.90 = 127,090.80 : x
  2. Step 2: Convert to fraction form
    326,885.40/490,230.90 = 127,090.80/x
  3. Step 3: Cross multiply
    326,885.40x = 490,230.90 × 127,090.80
  4. Step 4: Simplify right side
    326,885.40x = 62,303,837,265.72
  5. Step 5: Solve for x
    x = 62,303,837,265.72/326,885.40
  6. Step 6: Final answer
    x = 190,598.41

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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.