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Finding the Fourth Proportional to 370,980.60, 556,487.10 and 121,662.60

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Solution

The fourth proportional to 370,980.60, 556,487.10 and 121,662.60 is: 182,499.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,980.60 : 556,487.10 = 121,662.60 : x
  2. Step 2: Convert to fraction form
    370,980.60/556,487.10 = 121,662.60/x
  3. Step 3: Cross multiply
    370,980.60x = 556,487.10 × 121,662.60
  4. Step 4: Simplify right side
    370,980.60x = 67,703,667,452.46
  5. Step 5: Solve for x
    x = 67,703,667,452.46/370,980.60
  6. Step 6: Final answer
    x = 182,499.21

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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.