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Finding the Fourth Proportional to 268,290, 370,240.20 and 155,120.04

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Solution

The fourth proportional to 268,290, 370,240.20 and 155,120.04 is: 214,065.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,290 : 370,240.20 = 155,120.04 : x
  2. Step 2: Convert to fraction form
    268,290/370,240.20 = 155,120.04/x
  3. Step 3: Cross multiply
    268,290x = 370,240.20 × 155,120.04
  4. Step 4: Simplify right side
    268,290x = 57,431,674,633.61
  5. Step 5: Solve for x
    x = 57,431,674,633.61/268,290
  6. Step 6: Final answer
    x = 214,065.66

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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.