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Finding the Fourth Proportional to 518,172.57, 777,258.89 and 202,408.05

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Solution

The fourth proportional to 518,172.57, 777,258.89 and 202,408.05 is: 303,612.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,172.57 : 777,258.89 = 202,408.05 : x
  2. Step 2: Convert to fraction form
    518,172.57/777,258.89 = 202,408.05/x
  3. Step 3: Cross multiply
    518,172.57x = 777,258.89 × 202,408.05
  4. Step 4: Simplify right side
    518,172.57x = 157,323,455,258.02
  5. Step 5: Solve for x
    x = 157,323,455,258.02/518,172.57
  6. Step 6: Final answer
    x = 303,612.09

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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.