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Finding the Fourth Proportional to 370,839.60, 556,129.80 and 193,287.60

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Solution

The fourth proportional to 370,839.60, 556,129.80 and 193,287.60 is: 289,863.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,839.60 : 556,129.80 = 193,287.60 : x
  2. Step 2: Convert to fraction form
    370,839.60/556,129.80 = 193,287.60/x
  3. Step 3: Cross multiply
    370,839.60x = 556,129.80 × 193,287.60
  4. Step 4: Simplify right side
    370,839.60x = 107,492,994,330.48
  5. Step 5: Solve for x
    x = 107,492,994,330.48/370,839.60
  6. Step 6: Final answer
    x = 289,863.85

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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.