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Finding the Fourth Proportional to 519,165.40, 778,772.40 and 164,207.20

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Solution

The fourth proportional to 519,165.40, 778,772.40 and 164,207.20 is: 246,318.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,165.40 : 778,772.40 = 164,207.20 : x
  2. Step 2: Convert to fraction form
    519,165.40/778,772.40 = 164,207.20/x
  3. Step 3: Cross multiply
    519,165.40x = 778,772.40 × 164,207.20
  4. Step 4: Simplify right side
    519,165.40x = 127,880,035,241.28
  5. Step 5: Solve for x
    x = 127,880,035,241.28/519,165.40
  6. Step 6: Final answer
    x = 246,318.49

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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.