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Finding the Fourth Proportional to 289,801.80, 399,871.08 and 175,057.20

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Solution

The fourth proportional to 289,801.80, 399,871.08 and 175,057.20 is: 241,545.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,801.80 : 399,871.08 = 175,057.20 : x
  2. Step 2: Convert to fraction form
    289,801.80/399,871.08 = 175,057.20/x
  3. Step 3: Cross multiply
    289,801.80x = 399,871.08 × 175,057.20
  4. Step 4: Simplify right side
    289,801.80x = 70,000,311,625.78
  5. Step 5: Solve for x
    x = 70,000,311,625.78/289,801.80
  6. Step 6: Final answer
    x = 241,545.47

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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.