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Finding the Fourth Proportional to 400,877.62, 553,191.44 and 219,590.34

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Solution

The fourth proportional to 400,877.62, 553,191.44 and 219,590.34 is: 303,023.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,877.62 : 553,191.44 = 219,590.34 : x
  2. Step 2: Convert to fraction form
    400,877.62/553,191.44 = 219,590.34/x
  3. Step 3: Cross multiply
    400,877.62x = 553,191.44 × 219,590.34
  4. Step 4: Simplify right side
    400,877.62x = 121,475,496,394.69
  5. Step 5: Solve for x
    x = 121,475,496,394.69/400,877.62
  6. Step 6: Final answer
    x = 303,023.89

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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.