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Finding the Fourth Proportional to 326,962.80, 490,079.70 and 127,216.80

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Solution

The fourth proportional to 326,962.80, 490,079.70 and 127,216.80 is: 190,683.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,962.80 : 490,079.70 = 127,216.80 : x
  2. Step 2: Convert to fraction form
    326,962.80/490,079.70 = 127,216.80/x
  3. Step 3: Cross multiply
    326,962.80x = 490,079.70 × 127,216.80
  4. Step 4: Simplify right side
    326,962.80x = 62,346,371,178.96
  5. Step 5: Solve for x
    x = 62,346,371,178.96/326,962.80
  6. Step 6: Final answer
    x = 190,683.38

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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.