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Finding the Fourth Proportional to 228,857.32, 342,843.18 and 128,713.24

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Solution

The fourth proportional to 228,857.32, 342,843.18 and 128,713.24 is: 192,820.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,857.32 : 342,843.18 = 128,713.24 : x
  2. Step 2: Convert to fraction form
    228,857.32/342,843.18 = 128,713.24/x
  3. Step 3: Cross multiply
    228,857.32x = 342,843.18 × 128,713.24
  4. Step 4: Simplify right side
    228,857.32x = 44,128,456,509.70
  5. Step 5: Solve for x
    x = 44,128,456,509.70/228,857.32
  6. Step 6: Final answer
    x = 192,820.82

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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.