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Finding the Fourth Proportional to 370,971.30, 556,424.55 and 121,653.30

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Solution

The fourth proportional to 370,971.30, 556,424.55 and 121,653.30 is: 182,469.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,971.30 : 556,424.55 = 121,653.30 : x
  2. Step 2: Convert to fraction form
    370,971.30/556,424.55 = 121,653.30/x
  3. Step 3: Cross multiply
    370,971.30x = 556,424.55 × 121,653.30
  4. Step 4: Simplify right side
    370,971.30x = 67,690,882,708.52
  5. Step 5: Solve for x
    x = 67,690,882,708.52/370,971.30
  6. Step 6: Final answer
    x = 182,469.33

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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.