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Finding the Fourth Proportional to 617,648.12, 926,738.47 and 238,835.56

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Solution

The fourth proportional to 617,648.12, 926,738.47 and 238,835.56 is: 358,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,648.12 : 926,738.47 = 238,835.56 : x
  2. Step 2: Convert to fraction form
    617,648.12/926,738.47 = 238,835.56/x
  3. Step 3: Cross multiply
    617,648.12x = 926,738.47 × 238,835.56
  4. Step 4: Simplify right side
    617,648.12x = 221,338,096,822.30
  5. Step 5: Solve for x
    x = 221,338,096,822.30/617,648.12
  6. Step 6: Final answer
    x = 358,356.30

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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.