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Finding the Fourth Proportional to 404,712.57, 558,488.68 and 223,420.60

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Solution

The fourth proportional to 404,712.57, 558,488.68 and 223,420.60 is: 308,312.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,712.57 : 558,488.68 = 223,420.60 : x
  2. Step 2: Convert to fraction form
    404,712.57/558,488.68 = 223,420.60/x
  3. Step 3: Cross multiply
    404,712.57x = 558,488.68 × 223,420.60
  4. Step 4: Simplify right side
    404,712.57x = 124,777,874,024.04
  5. Step 5: Solve for x
    x = 124,777,874,024.04/404,712.57
  6. Step 6: Final answer
    x = 308,312.33

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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.