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Finding the Fourth Proportional to 519,449.80, 779,247.60 and 164,426.80

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Solution

The fourth proportional to 519,449.80, 779,247.60 and 164,426.80 is: 246,663.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,449.80 : 779,247.60 = 164,426.80 : x
  2. Step 2: Convert to fraction form
    519,449.80/779,247.60 = 164,426.80/x
  3. Step 3: Cross multiply
    519,449.80x = 779,247.60 × 164,426.80
  4. Step 4: Simplify right side
    519,449.80x = 128,129,189,275.68
  5. Step 5: Solve for x
    x = 128,129,189,275.68/519,449.80
  6. Step 6: Final answer
    x = 246,663.28

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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.