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Finding the Fourth Proportional to 519,878.64, 779,845.68 and 164,921.04

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Solution

The fourth proportional to 519,878.64, 779,845.68 and 164,921.04 is: 247,390.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,878.64 : 779,845.68 = 164,921.04 : x
  2. Step 2: Convert to fraction form
    519,878.64/779,845.68 = 164,921.04/x
  3. Step 3: Cross multiply
    519,878.64x = 779,845.68 × 164,921.04
  4. Step 4: Simplify right side
    519,878.64x = 128,612,960,585.11
  5. Step 5: Solve for x
    x = 128,612,960,585.11/519,878.64
  6. Step 6: Final answer
    x = 247,390.35

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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.