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Finding the Fourth Proportional to 218,817.60, 301,968.05 and 118,215.60

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Solution

The fourth proportional to 218,817.60, 301,968.05 and 118,215.60 is: 163,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,817.60 : 301,968.05 = 118,215.60 : x
  2. Step 2: Convert to fraction form
    218,817.60/301,968.05 = 118,215.60/x
  3. Step 3: Cross multiply
    218,817.60x = 301,968.05 × 118,215.60
  4. Step 4: Simplify right side
    218,817.60x = 35,697,333,620.50
  5. Step 5: Solve for x
    x = 35,697,333,620.50/218,817.60
  6. Step 6: Final answer
    x = 163,137.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.