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Finding the Fourth Proportional to 519,987.60, 779,981.40 and 165,029.40

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Solution

The fourth proportional to 519,987.60, 779,981.40 and 165,029.40 is: 247,544.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,987.60 : 779,981.40 = 165,029.40 : x
  2. Step 2: Convert to fraction form
    519,987.60/779,981.40 = 165,029.40/x
  3. Step 3: Cross multiply
    519,987.60x = 779,981.40 × 165,029.40
  4. Step 4: Simplify right side
    519,987.60x = 128,719,862,453.16
  5. Step 5: Solve for x
    x = 128,719,862,453.16/519,987.60
  6. Step 6: Final answer
    x = 247,544.10

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Similar ratio
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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.