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Finding the Fourth Proportional to 402,171.99, 554,997.01 and 220,888.82

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Solution

The fourth proportional to 402,171.99, 554,997.01 and 220,888.82 is: 304,826.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,171.99 : 554,997.01 = 220,888.82 : x
  2. Step 2: Convert to fraction form
    402,171.99/554,997.01 = 220,888.82/x
  3. Step 3: Cross multiply
    402,171.99x = 554,997.01 × 220,888.82
  4. Step 4: Simplify right side
    402,171.99x = 122,592,634,642.43
  5. Step 5: Solve for x
    x = 122,592,634,642.43/402,171.99
  6. Step 6: Final answer
    x = 304,826.39

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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.