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Finding the Fourth Proportional to 404,690.69, 558,433.32 and 223,390.91

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Solution

The fourth proportional to 404,690.69, 558,433.32 and 223,390.91 is: 308,257.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,690.69 : 558,433.32 = 223,390.91 : x
  2. Step 2: Convert to fraction form
    404,690.69/558,433.32 = 223,390.91/x
  3. Step 3: Cross multiply
    404,690.69x = 558,433.32 × 223,390.91
  4. Step 4: Simplify right side
    404,690.69x = 124,748,927,529.12
  5. Step 5: Solve for x
    x = 124,748,927,529.12/404,690.69
  6. Step 6: Final answer
    x = 308,257.47

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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.