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Finding the Fourth Proportional to 512,355.80, 768,533.70 and 179,931.80

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Solution

The fourth proportional to 512,355.80, 768,533.70 and 179,931.80 is: 269,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,355.80 : 768,533.70 = 179,931.80 : x
  2. Step 2: Convert to fraction form
    512,355.80/768,533.70 = 179,931.80/x
  3. Step 3: Cross multiply
    512,355.80x = 768,533.70 × 179,931.80
  4. Step 4: Simplify right side
    512,355.80x = 138,283,652,001.66
  5. Step 5: Solve for x
    x = 138,283,652,001.66/512,355.80
  6. Step 6: Final answer
    x = 269,897.70

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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.