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Finding the Fourth Proportional to 519,585.30, 779,487.30 and 164,635.20

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Solution

The fourth proportional to 519,585.30, 779,487.30 and 164,635.20 is: 246,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,585.30 : 779,487.30 = 164,635.20 : x
  2. Step 2: Convert to fraction form
    519,585.30/779,487.30 = 164,635.20/x
  3. Step 3: Cross multiply
    519,585.30x = 779,487.30 × 164,635.20
  4. Step 4: Simplify right side
    519,585.30x = 128,331,047,532.96
  5. Step 5: Solve for x
    x = 128,331,047,532.96/519,585.30
  6. Step 6: Final answer
    x = 246,987.45

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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.