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Finding the Fourth Proportional to 542,648.94, 813,980.28 and 205,599.05

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Solution

The fourth proportional to 542,648.94, 813,980.28 and 205,599.05 is: 308,401.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,648.94 : 813,980.28 = 205,599.05 : x
  2. Step 2: Convert to fraction form
    542,648.94/813,980.28 = 205,599.05/x
  3. Step 3: Cross multiply
    542,648.94x = 813,980.28 × 205,599.05
  4. Step 4: Simplify right side
    542,648.94x = 167,353,575,251.47
  5. Step 5: Solve for x
    x = 167,353,575,251.47/542,648.94
  6. Step 6: Final answer
    x = 308,401.18

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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.