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Finding the Fourth Proportional to 289,444.56, 399,228.24 and 180,603.72

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Solution

The fourth proportional to 289,444.56, 399,228.24 and 180,603.72 is: 249,105.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,444.56 : 399,228.24 = 180,603.72 : x
  2. Step 2: Convert to fraction form
    289,444.56/399,228.24 = 180,603.72/x
  3. Step 3: Cross multiply
    289,444.56x = 399,228.24 × 180,603.72
  4. Step 4: Simplify right side
    289,444.56x = 72,102,105,273.05
  5. Step 5: Solve for x
    x = 72,102,105,273.05/289,444.56
  6. Step 6: Final answer
    x = 249,105.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.