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Finding the Fourth Proportional to 191,818.40, 287,727.60 and 49,663.40

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Solution

The fourth proportional to 191,818.40, 287,727.60 and 49,663.40 is: 74,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,818.40 : 287,727.60 = 49,663.40 : x
  2. Step 2: Convert to fraction form
    191,818.40/287,727.60 = 49,663.40/x
  3. Step 3: Cross multiply
    191,818.40x = 287,727.60 × 49,663.40
  4. Step 4: Simplify right side
    191,818.40x = 14,289,530,889.84
  5. Step 5: Solve for x
    x = 14,289,530,889.84/191,818.40
  6. Step 6: Final answer
    x = 74,495.10

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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.