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Finding the Fourth Proportional to 404,421.93, 558,100.67 and 223,145.15

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Solution

The fourth proportional to 404,421.93, 558,100.67 and 223,145.15 is: 307,939.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,421.93 : 558,100.67 = 223,145.15 : x
  2. Step 2: Convert to fraction form
    404,421.93/558,100.67 = 223,145.15/x
  3. Step 3: Cross multiply
    404,421.93x = 558,100.67 × 223,145.15
  4. Step 4: Simplify right side
    404,421.93x = 124,537,453,816.02
  5. Step 5: Solve for x
    x = 124,537,453,816.02/404,421.93
  6. Step 6: Final answer
    x = 307,939.42

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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.