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Finding the Fourth Proportional to 228,019.86, 342,030.60 and 134,460

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Solution

The fourth proportional to 228,019.86, 342,030.60 and 134,460 is: 201,690.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,019.86 : 342,030.60 = 134,460 : x
  2. Step 2: Convert to fraction form
    228,019.86/342,030.60 = 134,460/x
  3. Step 3: Cross multiply
    228,019.86x = 342,030.60 × 134,460
  4. Step 4: Simplify right side
    228,019.86x = 45,989,434,476
  5. Step 5: Solve for x
    x = 45,989,434,476/228,019.86
  6. Step 6: Final answer
    x = 201,690.48

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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.