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Finding the Fourth Proportional to 370,974.60, 556,478.10 and 121,656.60

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Solution

The fourth proportional to 370,974.60, 556,478.10 and 121,656.60 is: 182,490.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,974.60 : 556,478.10 = 121,656.60 : x
  2. Step 2: Convert to fraction form
    370,974.60/556,478.10 = 121,656.60/x
  3. Step 3: Cross multiply
    370,974.60x = 556,478.10 × 121,656.60
  4. Step 4: Simplify right side
    370,974.60x = 67,699,233,620.46
  5. Step 5: Solve for x
    x = 67,699,233,620.46/370,974.60
  6. Step 6: Final answer
    x = 182,490.21

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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.