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Finding the Fourth Proportional to 519,431.60, 779,147.40 and 164,473.40

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Solution

The fourth proportional to 519,431.60, 779,147.40 and 164,473.40 is: 246,710.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,431.60 : 779,147.40 = 164,473.40 : x
  2. Step 2: Convert to fraction form
    519,431.60/779,147.40 = 164,473.40/x
  3. Step 3: Cross multiply
    519,431.60x = 779,147.40 × 164,473.40
  4. Step 4: Simplify right side
    519,431.60x = 128,149,021,979.16
  5. Step 5: Solve for x
    x = 128,149,021,979.16/519,431.60
  6. Step 6: Final answer
    x = 246,710.10

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Double scale
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Similar ratio
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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.