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Finding the Fourth Proportional to 382,235.34, 570,127.95 and 331,919.76

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Solution

The fourth proportional to 382,235.34, 570,127.95 and 331,919.76 is: 495,079.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,235.34 : 570,127.95 = 331,919.76 : x
  2. Step 2: Convert to fraction form
    382,235.34/570,127.95 = 331,919.76/x
  3. Step 3: Cross multiply
    382,235.34x = 570,127.95 × 331,919.76
  4. Step 4: Simplify right side
    382,235.34x = 189,236,732,333.29
  5. Step 5: Solve for x
    x = 189,236,732,333.29/382,235.34
  6. Step 6: Final answer
    x = 495,079.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.