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Finding the Fourth Proportional to 404,423.40, 558,102.72 and 223,146.60

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Solution

The fourth proportional to 404,423.40, 558,102.72 and 223,146.60 is: 307,941.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,423.40 : 558,102.72 = 223,146.60 : x
  2. Step 2: Convert to fraction form
    404,423.40/558,102.72 = 223,146.60/x
  3. Step 3: Cross multiply
    404,423.40x = 558,102.72 × 223,146.60
  4. Step 4: Simplify right side
    404,423.40x = 124,538,724,418.75
  5. Step 5: Solve for x
    x = 124,538,724,418.75/404,423.40
  6. Step 6: Final answer
    x = 307,941.44

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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.