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Finding the Fourth Proportional to 191,946.60, 287,790.30 and 98,375.40

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Solution

The fourth proportional to 191,946.60, 287,790.30 and 98,375.40 is: 147,496.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,946.60 : 287,790.30 = 98,375.40 : x
  2. Step 2: Convert to fraction form
    191,946.60/287,790.30 = 98,375.40/x
  3. Step 3: Cross multiply
    191,946.60x = 287,790.30 × 98,375.40
  4. Step 4: Simplify right side
    191,946.60x = 28,311,485,878.62
  5. Step 5: Solve for x
    x = 28,311,485,878.62/191,946.60
  6. Step 6: Final answer
    x = 147,496.68

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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.