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Finding the Fourth Proportional to 399,567.08, 551,393.34 and 218,279.76

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Solution

The fourth proportional to 399,567.08, 551,393.34 and 218,279.76 is: 301,221.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,567.08 : 551,393.34 = 218,279.76 : x
  2. Step 2: Convert to fraction form
    399,567.08/551,393.34 = 218,279.76/x
  3. Step 3: Cross multiply
    399,567.08x = 551,393.34 × 218,279.76
  4. Step 4: Simplify right side
    399,567.08x = 120,358,005,920.80
  5. Step 5: Solve for x
    x = 120,358,005,920.80/399,567.08
  6. Step 6: Final answer
    x = 301,221.03

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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.