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Finding the Fourth Proportional to 191,911.68, 287,867.52 and 159,010.56

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Solution

The fourth proportional to 191,911.68, 287,867.52 and 159,010.56 is: 238,515.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,911.68 : 287,867.52 = 159,010.56 : x
  2. Step 2: Convert to fraction form
    191,911.68/287,867.52 = 159,010.56/x
  3. Step 3: Cross multiply
    191,911.68x = 287,867.52 × 159,010.56
  4. Step 4: Simplify right side
    191,911.68x = 45,773,975,561.01
  5. Step 5: Solve for x
    x = 45,773,975,561.01/191,911.68
  6. Step 6: Final answer
    x = 238,515.84

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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.