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Finding the Fourth Proportional to 404,710.70, 558,486.09 and 223,418.72

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Solution

The fourth proportional to 404,710.70, 558,486.09 and 223,418.72 is: 308,309.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,710.70 : 558,486.09 = 223,418.72 : x
  2. Step 2: Convert to fraction form
    404,710.70/558,486.09 = 223,418.72/x
  3. Step 3: Cross multiply
    404,710.70x = 558,486.09 × 223,418.72
  4. Step 4: Simplify right side
    404,710.70x = 124,776,248,761.82
  5. Step 5: Solve for x
    x = 124,776,248,761.82/404,710.70
  6. Step 6: Final answer
    x = 308,309.74

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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.