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Finding the Fourth Proportional to 519,317.30, 779,085.30 and 164,367.20

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Solution

The fourth proportional to 519,317.30, 779,085.30 and 164,367.20 is: 246,585.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,317.30 : 779,085.30 = 164,367.20 : x
  2. Step 2: Convert to fraction form
    519,317.30/779,085.30 = 164,367.20/x
  3. Step 3: Cross multiply
    519,317.30x = 779,085.30 × 164,367.20
  4. Step 4: Simplify right side
    519,317.30x = 128,056,069,322.16
  5. Step 5: Solve for x
    x = 128,056,069,322.16/519,317.30
  6. Step 6: Final answer
    x = 246,585.41

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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.