Home / 266,815.40-368,205.13-145,956.65

Finding the Fourth Proportional to 266,815.40, 368,205.13 and 145,956.65

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Solution

The fourth proportional to 266,815.40, 368,205.13 and 145,956.65 is: 201,420.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,815.40 : 368,205.13 = 145,956.65 : x
  2. Step 2: Convert to fraction form
    266,815.40/368,205.13 = 145,956.65/x
  3. Step 3: Cross multiply
    266,815.40x = 368,205.13 × 145,956.65
  4. Step 4: Simplify right side
    266,815.40x = 53,741,987,287.61
  5. Step 5: Solve for x
    x = 53,741,987,287.61/266,815.40
  6. Step 6: Final answer
    x = 201,420.11

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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.