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Finding the Fourth Proportional to 289,300.48, 433,644.54 and 131,639.65

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Solution

The fourth proportional to 289,300.48, 433,644.54 and 131,639.65 is: 197,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,300.48 : 433,644.54 = 131,639.65 : x
  2. Step 2: Convert to fraction form
    289,300.48/433,644.54 = 131,639.65/x
  3. Step 3: Cross multiply
    289,300.48x = 433,644.54 × 131,639.65
  4. Step 4: Simplify right side
    289,300.48x = 57,084,815,470.01
  5. Step 5: Solve for x
    x = 57,084,815,470.01/289,300.48
  6. Step 6: Final answer
    x = 197,320.15

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1.5x scale

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.