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Finding the Fourth Proportional to 370,879.80, 556,287.30 and 121,561.80

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Solution

The fourth proportional to 370,879.80, 556,287.30 and 121,561.80 is: 182,332.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,879.80 : 556,287.30 = 121,561.80 : x
  2. Step 2: Convert to fraction form
    370,879.80/556,287.30 = 121,561.80/x
  3. Step 3: Cross multiply
    370,879.80x = 556,287.30 × 121,561.80
  4. Step 4: Simplify right side
    370,879.80x = 67,623,285,505.14
  5. Step 5: Solve for x
    x = 67,623,285,505.14/370,879.80
  6. Step 6: Final answer
    x = 182,332.08

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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.