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Finding the Fourth Proportional to 540,380.95, 810,587.90 and 185,389.95

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Solution

The fourth proportional to 540,380.95, 810,587.90 and 185,389.95 is: 278,090.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,380.95 : 810,587.90 = 185,389.95 : x
  2. Step 2: Convert to fraction form
    540,380.95/810,587.90 = 185,389.95/x
  3. Step 3: Cross multiply
    540,380.95x = 810,587.90 × 185,389.95
  4. Step 4: Simplify right side
    540,380.95x = 150,274,850,251.61
  5. Step 5: Solve for x
    x = 150,274,850,251.61/540,380.95
  6. Step 6: Final answer
    x = 278,090.58

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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.