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Finding the Fourth Proportional to 254,656.80, 381,706.20 and 128,095.20

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Solution

The fourth proportional to 254,656.80, 381,706.20 and 128,095.20 is: 192,002.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,656.80 : 381,706.20 = 128,095.20 : x
  2. Step 2: Convert to fraction form
    254,656.80/381,706.20 = 128,095.20/x
  3. Step 3: Cross multiply
    254,656.80x = 381,706.20 × 128,095.20
  4. Step 4: Simplify right side
    254,656.80x = 48,894,732,030.24
  5. Step 5: Solve for x
    x = 48,894,732,030.24/254,656.80
  6. Step 6: Final answer
    x = 192,002.46

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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.