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Finding the Fourth Proportional to 401,191.66, 598,200.73 and 390,169.18

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Solution

The fourth proportional to 401,191.66, 598,200.73 and 390,169.18 is: 581,765.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,191.66 : 598,200.73 = 390,169.18 : x
  2. Step 2: Convert to fraction form
    401,191.66/598,200.73 = 390,169.18/x
  3. Step 3: Cross multiply
    401,191.66x = 598,200.73 × 390,169.18
  4. Step 4: Simplify right side
    401,191.66x = 233,399,488,299.50
  5. Step 5: Solve for x
    x = 233,399,488,299.50/401,191.66
  6. Step 6: Final answer
    x = 581,765.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.