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Finding the Fourth Proportional to 399,344.60, 551,117.96 and 218,073.39

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Solution

The fourth proportional to 399,344.60, 551,117.96 and 218,073.39 is: 300,953.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,344.60 : 551,117.96 = 218,073.39 : x
  2. Step 2: Convert to fraction form
    399,344.60/551,117.96 = 218,073.39/x
  3. Step 3: Cross multiply
    399,344.60x = 551,117.96 × 218,073.39
  4. Step 4: Simplify right side
    399,344.60x = 120,184,160,305.58
  5. Step 5: Solve for x
    x = 120,184,160,305.58/399,344.60
  6. Step 6: Final answer
    x = 300,953.51

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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.