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Finding the Fourth Proportional to 268,642.62, 370,685.70 and 155,443.50

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Solution

The fourth proportional to 268,642.62, 370,685.70 and 155,443.50 is: 214,488.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,642.62 : 370,685.70 = 155,443.50 : x
  2. Step 2: Convert to fraction form
    268,642.62/370,685.70 = 155,443.50/x
  3. Step 3: Cross multiply
    268,642.62x = 370,685.70 × 155,443.50
  4. Step 4: Simplify right side
    268,642.62x = 57,620,682,607.95
  5. Step 5: Solve for x
    x = 57,620,682,607.95/268,642.62
  6. Step 6: Final answer
    x = 214,488.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.