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Finding the Fourth Proportional to 406,876.38, 561,490.02 and 225,590.28

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Solution

The fourth proportional to 406,876.38, 561,490.02 and 225,590.28 is: 311,314.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,876.38 : 561,490.02 = 225,590.28 : x
  2. Step 2: Convert to fraction form
    406,876.38/561,490.02 = 225,590.28/x
  3. Step 3: Cross multiply
    406,876.38x = 561,490.02 × 225,590.28
  4. Step 4: Simplify right side
    406,876.38x = 126,666,690,829.01
  5. Step 5: Solve for x
    x = 126,666,690,829.01/406,876.38
  6. Step 6: Final answer
    x = 311,314.93

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1.5x scale

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.