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Finding the Fourth Proportional to 212,677.60, 318,622.80 and 123,973.60

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Solution

The fourth proportional to 212,677.60, 318,622.80 and 123,973.60 is: 185,730.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,677.60 : 318,622.80 = 123,973.60 : x
  2. Step 2: Convert to fraction form
    212,677.60/318,622.80 = 123,973.60/x
  3. Step 3: Cross multiply
    212,677.60x = 318,622.80 × 123,973.60
  4. Step 4: Simplify right side
    212,677.60x = 39,500,815,558.08
  5. Step 5: Solve for x
    x = 39,500,815,558.08/212,677.60
  6. Step 6: Final answer
    x = 185,730.96

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1.5x scale

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.