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Finding the Fourth Proportional to 308,378.01, 462,741.98 and 121,520.73

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Solution

The fourth proportional to 308,378.01, 462,741.98 and 121,520.73 is: 182,350.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,378.01 : 462,741.98 = 121,520.73 : x
  2. Step 2: Convert to fraction form
    308,378.01/462,741.98 = 121,520.73/x
  3. Step 3: Cross multiply
    308,378.01x = 462,741.98 × 121,520.73
  4. Step 4: Simplify right side
    308,378.01x = 56,232,742,603.64
  5. Step 5: Solve for x
    x = 56,232,742,603.64/308,378.01
  6. Step 6: Final answer
    x = 182,350.04

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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.