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Finding the Fourth Proportional to 400,774.98, 553,070.33 and 217,015.56

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Solution

The fourth proportional to 400,774.98, 553,070.33 and 217,015.56 is: 299,481.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,774.98 : 553,070.33 = 217,015.56 : x
  2. Step 2: Convert to fraction form
    400,774.98/553,070.33 = 217,015.56/x
  3. Step 3: Cross multiply
    400,774.98x = 553,070.33 × 217,015.56
  4. Step 4: Simplify right side
    400,774.98x = 120,024,866,299.26
  5. Step 5: Solve for x
    x = 120,024,866,299.26/400,774.98
  6. Step 6: Final answer
    x = 299,481.93

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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.