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Finding the Fourth Proportional to 210,179.20, 315,268.80 and 197,737.60

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Solution

The fourth proportional to 210,179.20, 315,268.80 and 197,737.60 is: 296,606.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,179.20 : 315,268.80 = 197,737.60 : x
  2. Step 2: Convert to fraction form
    210,179.20/315,268.80 = 197,737.60/x
  3. Step 3: Cross multiply
    210,179.20x = 315,268.80 × 197,737.60
  4. Step 4: Simplify right side
    210,179.20x = 62,340,495,866.88
  5. Step 5: Solve for x
    x = 62,340,495,866.88/210,179.20
  6. Step 6: Final answer
    x = 296,606.40

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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.