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Finding the Fourth Proportional to 542,622.72, 813,921.72 and 143,291.52

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Solution

The fourth proportional to 542,622.72, 813,921.72 and 143,291.52 is: 214,934.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,622.72 : 813,921.72 = 143,291.52 : x
  2. Step 2: Convert to fraction form
    542,622.72/813,921.72 = 143,291.52/x
  3. Step 3: Cross multiply
    542,622.72x = 813,921.72 × 143,291.52
  4. Step 4: Simplify right side
    542,622.72x = 116,628,080,419.81
  5. Step 5: Solve for x
    x = 116,628,080,419.81/542,622.72
  6. Step 6: Final answer
    x = 214,934.02

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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.