Home / 289,345.80-433,727.10-131,687.40

Finding the Fourth Proportional to 289,345.80, 433,727.10 and 131,687.40

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Solution

The fourth proportional to 289,345.80, 433,727.10 and 131,687.40 is: 197,398.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,345.80 : 433,727.10 = 131,687.40 : x
  2. Step 2: Convert to fraction form
    289,345.80/433,727.10 = 131,687.40/x
  3. Step 3: Cross multiply
    289,345.80x = 433,727.10 × 131,687.40
  4. Step 4: Simplify right side
    289,345.80x = 57,116,394,108.54
  5. Step 5: Solve for x
    x = 57,116,394,108.54/289,345.80
  6. Step 6: Final answer
    x = 197,398.39

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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.