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Finding the Fourth Proportional to 401,613.20, 602,506.20 and 121,158.80

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Solution

The fourth proportional to 401,613.20, 602,506.20 and 121,158.80 is: 181,764.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,613.20 : 602,506.20 = 121,158.80 : x
  2. Step 2: Convert to fraction form
    401,613.20/602,506.20 = 121,158.80/x
  3. Step 3: Cross multiply
    401,613.20x = 602,506.20 × 121,158.80
  4. Step 4: Simplify right side
    401,613.20x = 72,998,928,184.56
  5. Step 5: Solve for x
    x = 72,998,928,184.56/401,613.20
  6. Step 6: Final answer
    x = 181,764.27

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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.