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Finding the Fourth Proportional to 402,817.41, 555,876.90 and 221,529.33

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Solution

The fourth proportional to 402,817.41, 555,876.90 and 221,529.33 is: 305,704.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,817.41 : 555,876.90 = 221,529.33 : x
  2. Step 2: Convert to fraction form
    402,817.41/555,876.90 = 221,529.33/x
  3. Step 3: Cross multiply
    402,817.41x = 555,876.90 × 221,529.33
  4. Step 4: Simplify right side
    402,817.41x = 123,143,037,219.48
  5. Step 5: Solve for x
    x = 123,143,037,219.48/402,817.41
  6. Step 6: Final answer
    x = 305,704.36

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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.