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Finding the Fourth Proportional to 399,487.96, 550,580.46 and 302,459.33

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Solution

The fourth proportional to 399,487.96, 550,580.46 and 302,459.33 is: 416,854.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,487.96 : 550,580.46 = 302,459.33 : x
  2. Step 2: Convert to fraction form
    399,487.96/550,580.46 = 302,459.33/x
  3. Step 3: Cross multiply
    399,487.96x = 550,580.46 × 302,459.33
  4. Step 4: Simplify right side
    399,487.96x = 166,528,197,284.92
  5. Step 5: Solve for x
    x = 166,528,197,284.92/399,487.96
  6. Step 6: Final answer
    x = 416,854.11

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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.