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Finding the Fourth Proportional to 404,688.90, 558,467.49 and 223,400.79

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Solution

The fourth proportional to 404,688.90, 558,467.49 and 223,400.79 is: 308,291.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,688.90 : 558,467.49 = 223,400.79 : x
  2. Step 2: Convert to fraction form
    404,688.90/558,467.49 = 223,400.79/x
  3. Step 3: Cross multiply
    404,688.90x = 558,467.49 × 223,400.79
  4. Step 4: Simplify right side
    404,688.90x = 124,762,078,455.32
  5. Step 5: Solve for x
    x = 124,762,078,455.32/404,688.90
  6. Step 6: Final answer
    x = 308,291.33

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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.