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Finding the Fourth Proportional to 370,986.60, 556,496.10 and 121,668.60

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Solution

The fourth proportional to 370,986.60, 556,496.10 and 121,668.60 is: 182,508.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,986.60 : 556,496.10 = 121,668.60 : x
  2. Step 2: Convert to fraction form
    370,986.60/556,496.10 = 121,668.60/x
  3. Step 3: Cross multiply
    370,986.60x = 556,496.10 × 121,668.60
  4. Step 4: Simplify right side
    370,986.60x = 67,708,101,392.46
  5. Step 5: Solve for x
    x = 67,708,101,392.46/370,986.60
  6. Step 6: Final answer
    x = 182,508.21

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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.