Home / 419,869.98-579,514.50-266,878.40

Finding the Fourth Proportional to 419,869.98, 579,514.50 and 266,878.40

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Solution

The fourth proportional to 419,869.98, 579,514.50 and 266,878.40 is: 368,351.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,869.98 : 579,514.50 = 266,878.40 : x
  2. Step 2: Convert to fraction form
    419,869.98/579,514.50 = 266,878.40/x
  3. Step 3: Cross multiply
    419,869.98x = 579,514.50 × 266,878.40
  4. Step 4: Simplify right side
    419,869.98x = 154,659,899,639.23
  5. Step 5: Solve for x
    x = 154,659,899,639.23/419,869.98
  6. Step 6: Final answer
    x = 368,351.89

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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.