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Finding the Fourth Proportional to 612,076.60, 918,201.30 and 191,308.60

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Solution

The fourth proportional to 612,076.60, 918,201.30 and 191,308.60 is: 286,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,076.60 : 918,201.30 = 191,308.60 : x
  2. Step 2: Convert to fraction form
    612,076.60/918,201.30 = 191,308.60/x
  3. Step 3: Cross multiply
    612,076.60x = 918,201.30 × 191,308.60
  4. Step 4: Simplify right side
    612,076.60x = 175,659,805,221.18
  5. Step 5: Solve for x
    x = 175,659,805,221.18/612,076.60
  6. Step 6: Final answer
    x = 286,989.90

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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.