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Finding the Fourth Proportional to 512,364.80, 768,547.20 and 179,940.80

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Solution

The fourth proportional to 512,364.80, 768,547.20 and 179,940.80 is: 269,911.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,364.80 : 768,547.20 = 179,940.80 : x
  2. Step 2: Convert to fraction form
    512,364.80/768,547.20 = 179,940.80/x
  3. Step 3: Cross multiply
    512,364.80x = 768,547.20 × 179,940.80
  4. Step 4: Simplify right side
    512,364.80x = 138,292,998,005.76
  5. Step 5: Solve for x
    x = 138,292,998,005.76/512,364.80
  6. Step 6: Final answer
    x = 269,911.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.