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Finding the Fourth Proportional to 638,713.65, 958,125.81 and 234,015.78

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Solution

The fourth proportional to 638,713.65, 958,125.81 and 234,015.78 is: 351,043.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,713.65 : 958,125.81 = 234,015.78 : x
  2. Step 2: Convert to fraction form
    638,713.65/958,125.81 = 234,015.78/x
  3. Step 3: Cross multiply
    638,713.65x = 958,125.81 × 234,015.78
  4. Step 4: Simplify right side
    638,713.65x = 224,216,563,235.81
  5. Step 5: Solve for x
    x = 224,216,563,235.81/638,713.65
  6. Step 6: Final answer
    x = 351,043.95

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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.