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Finding the Fourth Proportional to 540,376.61, 810,581.31 and 185,385.50

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Solution

The fourth proportional to 540,376.61, 810,581.31 and 185,385.50 is: 278,083.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,376.61 : 810,581.31 = 185,385.50 : x
  2. Step 2: Convert to fraction form
    540,376.61/810,581.31 = 185,385.50/x
  3. Step 3: Cross multiply
    540,376.61x = 810,581.31 × 185,385.50
  4. Step 4: Simplify right side
    540,376.61x = 150,270,021,445.01
  5. Step 5: Solve for x
    x = 150,270,021,445.01/540,376.61
  6. Step 6: Final answer
    x = 278,083.87

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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.