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Finding the Fourth Proportional to 268,643.84, 370,740.96 and 155,444.64

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Solution

The fourth proportional to 268,643.84, 370,740.96 and 155,444.64 is: 214,520.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,643.84 : 370,740.96 = 155,444.64 : x
  2. Step 2: Convert to fraction form
    268,643.84/370,740.96 = 155,444.64/x
  3. Step 3: Cross multiply
    268,643.84x = 370,740.96 × 155,444.64
  4. Step 4: Simplify right side
    268,643.84x = 57,629,695,060.45
  5. Step 5: Solve for x
    x = 57,629,695,060.45/268,643.84
  6. Step 6: Final answer
    x = 214,520.81

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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.