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Finding the Fourth Proportional to 518,960.25, 716,165.15 and 280,496.25

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Solution

The fourth proportional to 518,960.25, 716,165.15 and 280,496.25 is: 387,084.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,960.25 : 716,165.15 = 280,496.25 : x
  2. Step 2: Convert to fraction form
    518,960.25/716,165.15 = 280,496.25/x
  3. Step 3: Cross multiply
    518,960.25x = 716,165.15 × 280,496.25
  4. Step 4: Simplify right side
    518,960.25x = 200,881,637,553.21
  5. Step 5: Solve for x
    x = 200,881,637,553.21/518,960.25
  6. Step 6: Final answer
    x = 387,084.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.