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Finding the Fourth Proportional to 547,181.12, 755,031.85 and 305,458.39

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Solution

The fourth proportional to 547,181.12, 755,031.85 and 305,458.39 is: 421,488.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,181.12 : 755,031.85 = 305,458.39 : x
  2. Step 2: Convert to fraction form
    547,181.12/755,031.85 = 305,458.39/x
  3. Step 3: Cross multiply
    547,181.12x = 755,031.85 × 305,458.39
  4. Step 4: Simplify right side
    547,181.12x = 230,630,813,479.87
  5. Step 5: Solve for x
    x = 230,630,813,479.87/547,181.12
  6. Step 6: Final answer
    x = 421,488.98

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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.