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Finding the Fourth Proportional to 218,848.60, 328,272.90 and 191,200.60

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Solution

The fourth proportional to 218,848.60, 328,272.90 and 191,200.60 is: 286,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,848.60 : 328,272.90 = 191,200.60 : x
  2. Step 2: Convert to fraction form
    218,848.60/328,272.90 = 191,200.60/x
  3. Step 3: Cross multiply
    218,848.60x = 328,272.90 × 191,200.60
  4. Step 4: Simplify right side
    218,848.60x = 62,765,975,443.74
  5. Step 5: Solve for x
    x = 62,765,975,443.74/218,848.60
  6. Step 6: Final answer
    x = 286,800.90

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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.