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Finding the Fourth Proportional to 542,607.36, 813,908.48 and 168,629.76

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Solution

The fourth proportional to 542,607.36, 813,908.48 and 168,629.76 is: 252,943.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,607.36 : 813,908.48 = 168,629.76 : x
  2. Step 2: Convert to fraction form
    542,607.36/813,908.48 = 168,629.76/x
  3. Step 3: Cross multiply
    542,607.36x = 813,908.48 × 168,629.76
  4. Step 4: Simplify right side
    542,607.36x = 137,249,191,644.37
  5. Step 5: Solve for x
    x = 137,249,191,644.37/542,607.36
  6. Step 6: Final answer
    x = 252,943.84

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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.